Martin Kronicle访谈
2010 年 5 月 4 日《三思访谈》 MartinKronicle:大家好。我是 MartinKronicle.com 网站的迈克尔·马丁。今天这期节目很精彩,相信你们会非常喜欢。欢迎迈克尔·莫布森。你好,迈克尔,最近怎么样?
Think Twice Interview May 4, 2010 MartinKronicle: Hi everybody. It’s Michael Martin from MartinKronicle.com. I’ve got a great show today. I think you’re going to enjoy quite a bit. Welcome Michael Mauboussin. How are you doing Michael?
迈克尔·莫布森:迈克尔,我很好。
Michael Mauboussin: Michael, I am great.
你好吗?
How are you doing?
MartinKronicle:我的人生就是《整夜摇滚,天天派对》[笑声]……如果你想了解我过得怎样的话。
MartinKronicle: I am Rock n Roll All Night, And Party Every Day [laughter] …If you want to know what my life is like.
莫布森:说得很好。
Mauboussin: That’s good.
MartinKronicle:我读过您的所有著作,包括那篇《一致性观察者》在内,所以我算是您的忠实粉丝。而且,很感谢您今天抽出时间。那么,在书的封底——这是个非常重要的问题,必须马上搞清楚——上面写着您和妻子以及五个孩子住在康涅狄格州达里恩,新英格兰的心脏地带。所以我首先得知道:扬基队还是红袜队?
MartinKronicle: Now, I’ve read all your work, going back to the “Consilient Observer,” so I am a big fan. And, I appreciate you taking the time today. Now in the back of the book – this is a very important question, it has to be addressed right way – it says you live in Darien, Connecticut with your wife and five kids, the heart of New England. So the first thing I need to know is Yankees or Red Sox?
莫布森:你看,我算不上是个狂热的棒球迷……
Mauboussin: See, I am not a big baseball fan…
MartinKronicle:这回答真够安全的……!
MartinKronicle: Safe answer…!
莫布辛:……所以我基本保持中立。不过我得说,我是……我算是“点球成金”式的球迷,所以我认为……我认为那两位都很有钱。但我觉得我喜欢红袜队这几年和爱泼斯坦合作的做法。不过,我还是持观望态度。
Mauboussin: …so I stay in the fence pretty much. But I got to say that I am a fan of…I am sort of a money ball fan so I think that both…I think both of those guys have a lot of money. But I think I like what the Red Sox have done with Epstein over the last few years. But, I am on the fence.
MartinKronicle:西奥·爱泼斯坦无疑是个摇滚明星。我猜这可能跟约翰·亨利在你那儿放了钱有点关系——不过话说回来,我又知道什么呢。
MartinKronicle: Theo Epstein is a rock star for sure. I think this might be influenced by the fact that John Henry probably has money with you, but then, again, what do I know.
莫布辛:[笑] 一点都没有,对。
Mauboussin: [laughs] Not at all, yeah.
马丁·克朗尼克:对,说得好。我的一位导师埃德·塞柯塔以前常说——回到你书名的主题上——“要确保你的直觉不会变成‘幻想的直觉’(into-wishing)。”在你的领域里,作为教师、首席策略师和管钱的人,你在这方面看到过很多吗?
MartinKronicle: Yeah. So good. A mentor of mine Ed Seykota used to say – coming back to the title of your book – that: “Make sure that your intuition doesn’t become ‘into-wishing’.” Do you see that a lot in your field, in your experiences, both as a teacher, as a head strategist and as a money guy?
莫布辛:当然。关于直觉,我首先要说的是,它确实在决策中有一席之地。但我认为它被过分神化了,尤其是在市场和商业领域的作用。
Mauboussin: Absolutely. The first thing I would say about intuition is that it does have a role in decision-making. But I think it’s been vastly over glorified, in particular in its role in markets and in business.
我是这样理解这个问题的:用心理学家所说的两种思维模式——系统一和系统二来思考,就清楚了。
And the way I like to think about this is, well, using what psychologists call the two systems of the minds: system one and system two.
系统一是你的经验系统。它快速、敏捷、自动化,而且确实难以控制。系统二是你的分析系统:缓慢、有目的、深思熟虑,但具有可塑性。我认为直觉在你刚开始从事某项活动时发挥作用,比如小时候下棋。你开始的每一项活动,都处于系统二。也就是说,那是分析的一面。你会思考每个棋子怎么走。
System one is your experiential system. It’s fast. It’s quick. It’s automatic and really difficult to control. System two is your analytical system: slow, purposeful, deliberate, but malleable. I think intuition works when you start off in an activity, say playing chess as a little kid. Every activity that you start, you’re in system two. So it’s the analytic side. You think of how each of the pieces move.
但如果你反复这么做,时间长了,它就会滑入系统一,很多事情会变得凭直觉。所以,在某些领域确实存在直觉判断,但关键是必须满足两个条件:第一,你面对的系统是稳定的——用更专业的说法叫统计上平稳;第二,这个系统必须是线性的——也就是说,A 导致 B 每次都是同一种方式,不能是非线性的。那么我反问一句:当我们面对棋盘时,它是稳定且线性的吗?对,基本是。但当我们面对市场或商业这类事物时,它是平稳且非线性的吗?我认为答案是肯定的。所以,在这种情况下,你使用直觉时必须非常、非常谨慎。
But if you do it enough times, over time, it slides into system one and things become very intuitive. So there is intuition in certain sectors, but the key is that it has to have two conditions: One is you need to be dealing with the system that’s stable, or if you want to use a fancier term, stationary statistically. And second it has to be a system that’s linear – so ‘a’ causes ‘b’ the way every single time. It can’t non-linear. So the question I pose back is, when we’re dealing with chessboards, is it stable and linear? Yeah, pretty much. But when we’re dealing with things like markets or business, is it stationary and non-linear? I think the answer to that is yes. So there you have to be very, very careful about using your intuition.
我认为这一点至关重要,也与你引用的那句话有关,就是人们常常混淆经验和专长。两者的区别在于:专长拥有一个真正有预测能力的模型,能够切实预见未来会发生什么。而有经验的人往往自以为是专家、以为自己能预测,但情况并非总是如此,因为你的经验可能根本无法预示未来会发生什么。
What’s I think crucial about this, and to your quote, is that I think people often confuse experience with expertise. The difference is: an expert has a model that is actually predictive. Can actually anticipate what’s going to happen in the future. People that have experience often think that they’re experts and they can predict, but that’s not always the case because you’re experience may or may not be any indicator about what’s going to happen in the future.
再看看股票市场,说说我熟悉的领域。你 20 年前、25 年前开始做这行的时候,情况是……
And you think about people, for example, in the equity markets, my world. You started doing this 20 years ago, 25 years ago, there’s
你过去的经历中,根本没有任何东西能让你理解过去几年发生的事。所以在那件事上,经验并不能预测未来,因此你必须对此非常小心。没错,我认为直觉是管用的,但我觉得我们中有太多人把直觉用错了边界,并因此带来了一些负面后果。
absolutely nothing in your experience that would have lead you to understand what happened over the last few years. So experience was not predictive in that case, and hence you have to be very careful about that. Yeah, I think that intuition works, but I think too many of us extend it at the boundaries and with some negative consequences.
MartinKronicle: 感谢你的反馈。我一直很有兴趣。我受过实盘交易的训练,从对冲基金那边短暂待过一阵子,然后就转到系统开发了。所以,这一切都围绕蒙特卡洛模拟,在交易层面寻找预期结果,接下来我们会简单聊聊这部分。但说到我涉足交易,最初学的是如何看盘。我认为,直觉或对市场的感知可能正是在这里发挥作用。这在某种程度上是一门失传的艺术。
MartinKronicle: I appreciate your feedback on that. I am always interested. I am a physically trained trader, having come from the hedge side very, very briefly, and then I moved to system development. So it’s all about Monte Carlo simulations and looking for expected outcomes in terms of trades, and we’re going to get to that for a minute. But also my foray into trading was learning how to be a tape reader. And I think that might be where intuition or a feel for the market could actually come into play. It’s a lost art on some level.
您有没有接触过那种老式交易方法中的“看盘高手”(tape reader)的经验?
Do you have any experience with tape readers in terms of the old school way of trading?
莫布辛:我不会这么做。我认为积极参与有一定价值。我的意思是,尤其是在你进行交易的时候,你必须投入。而且,“感受市场”或许有些道理,盘面解读可能也有助于这一点。
Mauboussin: I don’t. I think that there is some value in being engaged. I mean especially when you’re trading, you have to be engaged. And, there probably is some sense in “feel the market,” and maybe the tape reading contributes to that.
话虽如此,我认为……我不确定是否有人对此做过系统性的研究。
That said, I think that…I don’t know if anybody has studied this systematically.
也许有人已经做到了。
Maybe somebody has.
MartinKronicle: Yeah.
MartinKronicle: Yeah.
莫布辛:我的感觉是,我们往往听到的——就像生活中大多数事情一样——往往是那些结果顺利的故事,而不顺的故事则听不到。所以我绝对确信——你比我知道得多——成为一名出色的交易员需要投入其中,这里面确实有一些成分。我对这个观点持开放态度,但我对是否存在那种纯粹靠解读盘面就能产生如此回报的人,持怀疑态度。
Mauboussin: My sense is we tend hear the – like most things in life – we tend to hear the stories that come out to be favorable, and we don’t hear the stories that don’t come out to be favorable. So why I am absolutely convinced – and you know more than I do – that being a great trader involves being engaged, and there’s some element of that. I am open minded about it, but I just would be skeptical as to whether there is such a thing as a guy being a pure tape reader being able to generate like such returns.
MartinKronicle: OK.
MartinKronicle: OK.
莫布森:就光从那个角度来看。
Mauboussin: Just solely from that.
马丁·克朗尼克:说得对。保罗·都铎·琼斯可能不这么看,但他具体用什么方法我也不是全知道。我知道他一度也是个艾略特波浪理论的人。
MartinKronicle: Fair enough. Paul Tudor Jones might disagree, but I don’t really know of everything that he uses. I know he was an Elliot Wave guy at one time, too.
我们回到你这边。你和我是迈克尔·科维尔那部电影《破产:新的美国梦》的受访者,我看了好几遍,特别是你那些片段。你在电影和书里说——我大致归纳一下——在概率环境中,关注过程比关注结果对你更有利。而我认为,结果可能来自运气,也可能来自技能。大众的想法是:“如果迈克·马丁在电视上对黄金做出预测,而我刚好说对了,那可能是因为我是专家。”但我要说,短期来看,这很可能是更随机的事,甚至运气的成分可能更大。你能给听众解释一下吗?
Let’s get back to you. You and I are both in Michael Covel’s movie, “Broke: The New American Dream,” and I’ve watched it a few times, especially your stuff. Now in the movie and in the book you say – and I am kind of putting this together – that in a probabilistic environment you’re better served by focusing on the process not the outcome. And I say the outcome might be due to luck or skill. The public thinks: “If Mike Martin goes on TV and makes a call on Gold and and I get it right, it might be because I am expert. But I’d say in the short run, it’s probably much more random than that, and may it might be even more luck. Can you explain that for the listeners?
莫布森:哦,对。感谢你提起这个,我觉得你在整件事上注入了一剂非常关键的诚实。
Mauboussin: Oh, yeah. I appreciate you bringing this up, and I think you’ve got a really important dose of honesty in all this.
我个人的思考方式是,生活中有个连续谱,一端是纯靠技能的活动,另一端是纯靠运气的活动。
The way I think about this personally is that there’s a continuum in life of some activities that are pure skill and some activities that are pure luck.
所以,你和我赛跑之类的,你知道跑得快的那个人会赢。但还有些别的东西——比如轮盘赌之类的——那就纯粹是运气。
So, you and I run a running race or something, you know the faster guy is going to win. And there are other things – roulette wheels or something – that are going to be pure luck.
而在生活中,几乎所有事物都是这两者的某种组合。
And almost everything else in life is some combination of these two.
我认为人类最不擅长的,就是判断事物处在这条连续 spectrum 上的什么位置。有些活动几乎全靠技巧,同样,你只要做上几次,技巧就会显露出来。另一些事情则几乎全靠运气。
I think what humans are really bad at is understanding where things lie along that continuum. And there are some activities that are mostly skill, where, again, you just do it a few times and skill will reveal itself. Other things that are mostly lucky.
我认为我们经常谈论市场,是因为价格本身蕴含着大量信息。运气也往往是一个非常、非常重要的组成部分。所以这又回到了你一开始说的那个问题:我应该关注过程,还是应该关注结果?我们知道的是,过程才是关键。
And I think that we talk about markets often because the prices itself has a lot of information. Luck is also often a very, very important component. So this goes back to what you said at the outset, which is: Should I focus on my process or should I focus on my outcome? What we know is process is what
你能掌控的,最终是技能层面的东西。如果你一次又一次地用正确的方式去做,次数足够多,最终结果也会让你满意。
you can control, and that would be ultimately the skill component. And if you do it over and over the right way enough times, ultimately the outcomes will be to your liking.
然而,反过来说也同样成立,而且这一点很难让人理解:你可以有一个糟糕的流程、一个差的流程、一个有缺陷的流程,却依然能享受到正面结果——至少短期内如此。
However, there’s also the opposite which is true, which is hard for people to get their minds around, which is: you can have a bad process, a poor process, a faulty process, and enjoy positive outcomes, at least in the short
说到这个,我想到一个故事。当时我和保罗·德波德斯塔聊天,他现在是圣地亚哥教士队的高管。他讲起在拉斯维加斯玩二十一点的经历。他旁边坐着一个手里有 17 点的人。庄家问要不要补牌,当然,谁都知道,标准二十一点里 17 点是不补的。那家伙却要了补牌。庄家翻开一张 4,那人的牌就凑成了好牌。庄家微微笑着说:“补得好,先生?”
run. One story that comes to my mind is I was talking to Paul DePodesta, who is now an executive at the San Diego Padres, and he was talking about blackjack in Las Vegas. And he’s sitting next to a guy who has got a 17. So the dealers asking for hits and, of course, everybody knows, standard blackjack you sit on a 17. The guy asked for a hit. The dealer flips over 4, makes the guys hand, right, and the dealer sort of smiles and says, “Nice hit, sir?”
赌场会觉得这算漂亮的一击,对吧?因为要是那家伙这么玩上一百次,赌场显然多半会赢。但就那一次具体情况而言:过程糟糕,结果不错。
Well, you’re thinking nice hit if you’re the casino, right, because if that guy does that a hundred times, obviously the casino is going to take it the bulk of the time. But in that one particular instance: bad process, good outcome.
所以这是我不断反复强调的一点。顺便说一句,这一点在体育领域成立,在投资领域成立,在交易领域也成立。如果你把过程作为关注的核心,并且把事情做对,那么长期来看,结果自然会水到渠成。
So that’s a thing I just try to emphasis over and over. And by the way, this is true for sports. It’s true for investing. It’s true for trading. If the process is the key thing that you focus on, and if you do it properly, over time the outcomes will ultimately take care of themselves.
但在短期内,随机性会占据主导地位,即便好的流程也可能导致糟糕的结果。如果出现这种情况:你重新振作起来,拍拍身上的灰尘,确保自己还有第二天可以交易的资金,然后再继续投入。
In the short run, however, randomness just takes over, and even a good process may lead to bad outcomes. And if that’s the case: You pick yourself up. You dust yourself off. You make sure you have capital to trade the next day, and you go back at it.
MartinKronicle:这听起来像宗教。当有人问我,“好吧,我凭什么把钱交给你?”我首先会这样回应——至少我以前常这么说,现在我有了一位大额资金配置者帮我兜底。我会说:“因为在战况最激烈的时候,我能让你少亏点。”
MartinKronicle: That sounds like religion. The first thing that I say when someone says, “Well, why I should I give you money?” At least I used to say it, now I have a big allocator to help me out. I’d say, “Well, because in the heat of battle, I am going lose you less.”
[laughs]
[laughs]
Mauboussin:没错,没错。这占了很大一部分。
Mauboussin: Exactly, exactly. And that’s a big part of it.
MartinKronicle:接下来另一个人……因为当我闻到烟味时,我的本能反应是:我必须假定这至少是一场三级火警。
MartinKronicle: Then the next guy…Because when I smell smoke, my goto-guns response is: I have to assume that it’s at least a minimum three alarm fire.
如果我能控制住你的损失规模,那么从情绪上说,我就能保持头脑清醒,在经历下跌后重新振作起来——无论那是几个百分点的回撤还是别的什么。一旦你跌了 15% 到 20%,你就和其他基金经理没什么两样了,回到盈亏平衡点需要长得多的时间。
And if I can keep your losses small, I’ll emotionally be able to keep my head in the game and recover from a drawdown, whether it’s a couple of percentage points or whatever. If you get down to 15-20%, now you’re just like every other manager and it takes you a lot longer to get back to break even.
在你的书里,你说“聪明人会做出糟糕的决策,因为他们和我们一样拥有出厂设置”。马尔科姆·格拉德威尔说过:“资历是业绩的糟糕预测指标。”我的看法是,从情感上讲,聪明人不喜欢犯错,因为他们的自尊心很大程度上建立在“聪明”这个标签上。
In the book, you say “smart people make poor decisions because they have the same factory settings as the rest of us.” Malcolm Gladwell said: “Credentials are poor predictors of performance.” My take is that, emotionally speaking, smart people don’t like being wrong, because their self esteem is pretty invested in being smart.
他们习惯了得 A。他们习惯了上院长名单。他们像你一样,是 Georgetown 和 Hoya Saxa 的人。如果你能告诉我 Hoya Saxa 是什么意思,我给你 500 美元。你能不能谈谈,在投资者(我特意用了复数)以及他们依赖专业头衔来选择资产管理者或受托人这个问题上,这种糟糕的决策过程是怎么起作用的?
They are used to getting A’s. They are used to being in the dean’s list. They are being, like you, a Georgetown and Hoya Saxa. I will give you $500 if you can tell me what Hoya Saxa means. Can you discuss this poor decision making process with respect to investors – and I say investors plurally – and their reliance on professional designations in choosing their asset manager or fiduciary?
Mauboussin:是啊。首先,你是认真的吗,给我 500 美元让我告诉你 Hoya Saxa 什么意思?因为我应该知道答案。
Mauboussin: Yeah. First, are you serious about giving me $500 to tell you what Hoya Saxa means, because I should know the answer to that?
MartinKronicle:我也知道,我查过维基百科。但你们得自己琢磨,把你们的希腊语和拉丁语拼起来。
MartinKronicle: I know it, too. I looked it up on Wikipedia. But you guys have to figure it out and get your Greek and your Latin together.
Mauboussin:没错。嘿,这是一个极其重要的问题。对我来说,讨论这个问题的最佳来源之一是菲尔·泰特洛克的研究,他是加州大学伯克利分校的心理学家,几年前写了一本绝对精彩的书叫《专家政治判断》。我想说的是,我认为每一位公民——当然也包括每一位投资者——但尤其是我们国家的每一位公民,都应该理解泰特洛克这本书的核心发现。简单说说他做了什么。
Mauboussin: Exactly. Hey, this is an extraordinarily important question. And, to me, one of the best sources for discussing this is the work done by Phil Tetlock, who is psychologist at Cal, Berkley, and he wrote an absolutely awesome book a few years called Expert Political Judgment. And what I’d like to say is I think every citizen – and certainly every investor – but every citizen of our nation should understand the core findings from Tetlock’s book. I mean here’s what he did
他出去调查了 300 位专家。这些人通常拥有硕士或博士学位,有十几年的经验。他让他们对政治和经济结果做出具体预测,在大约 15 年的时间里,他追踪了接近 3 万个预测。所以是大量的专家、大量的预测,跨越了很长一段时间。
basically. He went out and surveyed 300 experts. These are people typically Masters, PhD levels; dozen years of experience. He asked them to make specific predictions on the political and economical outcomes, and he talked about just shy of 30,000 predictions over about a 15 year period. So it’s a lot of experts, a lot of predictions, over a long period of time.
结果他发现,不出所料,他们的预测糟糕透顶。事实上,几乎简单的算法、外推算法也能做得一样好。还有一点非常不客气。他记录了这些预测,然后拿着结果去质问这些专家;他们就像我们其他人一样,正如你所说,有一大堆借口来解释为什么他们预测错了。“我差点就对了。要是事情朝着另一个方向发展,我就对了,”诸如此类。
And what he found was their predictions, as you would expect, were horrible. And, in fact, almost simple algorithms, extrapolation algorithms did as well. Now also did something very rude. He kept track of these things and he confronted these experts with their outcomes; and they, just like the rest of us, exactly as you said, they had just a host of excuses as to why they got things wrong. “I almost got it right. Had this gone the other way, I would have been right,” and so forth.
为什么我说聪明人装的是同样的软件?关键就在这里。我的意思是,当我们面临某些特定类型的情况时,我们所有人的大脑通常会倾向于某一种思考方式,而实际上存在更好的思考方式。这对所谓受过高等教育的人来说也一样。所以,仅仅因为某人是专家——顺便说一句,所谓的专家——你应该非常非常……我不知道。你应该搁置任何信念。你应该非常小心地依赖这些人,尤其是在处理那些概率性的或混乱的事情时。
Why I say that smart people come with the same software? Here’s the main thing. I mean, it’s that, when we’re faced with certain types of situations, all of us, our minds typically gravitate toward one way of thinking about it when there’s a better way to think about that. And that’s true even for so called highly educated people. So just because someone is an expert, by the way so called expert, you should be very, very…I don’t know. You should suspend any sort of beliefs. You should be very careful about relying on these people, especially getting in dealing with things that are probabilistic or messy.
当然,在某些领域,专家会很出色。如果你的汽车需要修理,或者叫个水管工,这些事,专家会干得很棒。但对于我们正在处理的那类事情,它们可能极其混乱。
Now, there are some areas where experts are going to be great. If your automobile needs repair or call the plumber or those kinds of things, experts are going to do a great job. But for the kinds of things that we’re dealing with, they can be extremely messy.
所以这就是重要的信息,我认为这对我们所有人都是一个重要的信息:当你听别人说话时要小心——谨慎这个词——就是要谨慎。顺便说一句,我想提一下泰特洛克发现的一件事。他发现这些家伙预测很差。但有两个因素在统计上显著且有效。第一,一个专家在媒体上被提及的频率越高,他的预测就越差。
So that’s the big message, and I think it’s a big message for all of us is that: Be careful when you – circumspect is the word – be circumspect when you listen to people. And by the way, I want to mention of the things that Tetlock found that was…He found that these guys were bad predictors. But there are two things that were statistically significant and it’s worked. Number one was the more frequently mentioned in the media a pundit was, the worst his or her predictions.
MartinKronicle: Oh!
MartinKronicle: Oh!
Mauboussin:所以几乎可以定义说,我们在电视上看到或在媒体上被引用的那些人,恰恰是最差的预测者。他发现的第二件事是,人们的政治观点、年龄或性别并不那么重要,重要的是他们的思维方式。他用以赛亚·伯林的语言区分了刺猬和狐狸。刺猬,我们都认识这种人。他们有一个大想法,世界上的一切都符合他们那个大想法,他们定期会迎来 15 分钟的名声,对吧。相反,狐狸是那些对许多不同事情都略知一二的人。他们倾向于模棱两可。他们倾向于走中间道路。他们是那种会说“一方面,另一方面”的人。事实证明,狐狸比我们的刺猬预测得好得多。
Mauboussin: So almost by definition, the people we see on TV or are quoted in the press are the worst predictors. And the second thing he found was that it didn’t matter so much what people’s political views were, their age or their gender, what mattered was their way of thinking. And he distinguished using Isaiah Berlin’s language between foxes and hedgehogs. Hedgehogs, we all know these people. These are the one big idea, everything in the world view fits into their big idea, and they periodically get their 15 minutes of fame, right. The foxes, in contrast, are those people that know little bit about a lot of different things. They tend to be equivocal. They tend to be down the middle of the road. They’re the ones that are saying, “One the hand, one the other hand.” And it turns out foxes are much better predictors than our hedgehogs.
所以这是要记住的另一件事。顺便说一句,我认为这两件事是相关的。电视、媒体——你想要谁?你不想要一个说“一方面可能这样,另一方面可能那样”的家伙。你想要一个对某一方有强烈观点的人。他们往往是刺猬,而且他们往往总的来说是最差的预测者。
So that’s the other thing to bear in mind. And by the way, I think those two things are related. TV, media – who do you want? You don’t want a guy saying, “On the one hand it could do this, on the other hand it could do that.” You want that someone who has a strong view on one side or the other. They tend to be hedgehogs, and they tend to again be on balance the worst predictors.
所以这些都是相互关联的。所以,是的,在许多许多领域,对专家的意见要持谨慎态度。甚至像医学这样的领域,顺便说一句,你也应该非常留意这一点。
So these are things are all related. So, yeah, be circumspect about listening to experts in many, many domains. Even things like medicine, by the way, is another area where you should be very mindful of this.
MartinKronicle:先说第一件事:当你写道情境意识——“我走进葡萄酒商店,传来优美的法国歌声……”——你给我们展示了一个统计数据,它绝对影响了人们的购买行为,比如,法国葡萄酒的销量比德国葡萄酒更大。结合你刚才说的关于专业头衔和试图依赖专家——那些专家出现次数与他们在媒体上被提及次数成反比——
MartinKronicle: First things first: When you wrote about situational awareness – “I walk into the wine store and there’s beautiful French crooning..,” – you showed us a statistic where it absolutely affected ones purchases, and French wines, I think, were sold in greater volume than German wines, for example. So with what you just said about professional designations and trying to rely on experts – experts who had an inverse relationship or their expertise was an inverse relationship with how many times they were mentioned in the media –
我的问题是这样:从情境上说,“在你的交易日里,让财经广播媒体在背景里开着,会不会影响你执行的交易数量、你可能会做的那种交易类型,就像听到法国音乐就会鼓励你买更多法国葡萄酒那样?”
my question to you is this: Situationally, “Does having financial broadcast media on in the background of your trading day affect the number of transactions you put on, the types of trades that you might put on, along the lines of how you’re encouraged to buy more French wine if you’re hearing the French music?
Mauboussin:对我来说,关于情境意识的整个讨论是书中最令人不安的部分之一,因为它显然是一种非常强大的影响,而且发生在我们意识层面之下。我们根本没有意识到。你提到的那个研究,我快速回顾一下:当超市里把两组葡萄酒——法国和德国——并列摆放,价格和质量大致匹配时,他们在几周内交替播放法国和德国音乐。播放法国音乐时,人们 77% 的时间买法国酒。播放德国音乐时,人们 73% 的时间买德国酒。
Mauboussin: To me, that whole discussion of situational awareness is one of the most – in the sense, in the book – one of the most disconcerting, because it is I think demonstrably a very powerful influence and something that’s below our level of consciousness. And, we’re just not aware of that. And that study you mentioned, just to recap it very quickly: When they had two sets of wines, French and German, next to each other in the supermarket, roughly match for price and quality. They alternated playing French and German music over a couple of weeks. When they played French music, people bought French wine 77% of time. And, when they played German music, people bought German wine 73% of the time.
同样引人注目的是,当人们结账时,研究人员走近他们问:“嘿,背景音乐……对你的购买决定有影响吗?”10 个人里有 9 个回答“没有”。好吧。数字很大,但人们就是没意识到。所以如果我们说“嘿,我开着电视”,有人不停地在谈论黄金价格或石油价格什么的,难道这就不可能影响你吗?我觉得理论上可能,但极不可能。就是极不可能,因为你被包围在这个环境里,人们不停地在谈论这个或那个。
What’s remarkable, again, is when people were checking out, after researchers then approached them and said, “Hey, did the music playing…did that have any influence on your purchase decision?” And nine out 10 say, “No.” OK. So big numbers, but just people are not aware of that. So we say “hey, I’ve got the TV on, ” and someone’s talking about…talking about gold or oil prices or what have you, and non stop, is it possible that that would not affect you? I think it’s conceivable, but it’s very, very unlikely. It’s just very unlikely because you’re enveloped in this basic environment where people are talking about one thing or another.
对我来说,从某种意义上说,你会发现许多最好的交易员和许多最好的投资者,这是一种有趣的现象。在生活中,你喜欢与别人情感相通。你想和他们建立联系。你想有同理心。但在投资中,从某种意义上说,情感上的超脱才是如此关键。
To me, in the sense that you see many of the best traders and many of the best investors, this is kind of a funny thing. In life you like to be emotionally connected to other people. You want to be able to relate to them. You want to emphatic. But in investing, in the sense, it’s that emotional detachments that’s so essential.
你能够不被别人裹挟,能够独立思考。我认为这是我们许多人面临的巨大挑战,当我们有那些影响时,比如电视,我们几乎不可能不让它——至少在某些方面——影响我们的行为。
That you are able to not get swept by other people, and you can think independently. And I think that’s the big challenge that a lot of us face, is that when we have those influences, like the TV, it’s almost impossible for us to not – at least in someway – for it to not affect our behaviors.
MartinKronicle:你可能记得,大概半年前吧。
MartinKronicle: So you probably remember, I think it’s probably six months.
乔恩·斯图尔特对阵吉姆·克莱默,把他狠狠批了一顿。再说一次,我只看过 Hulu 或其他网站上的一些片段。
Jon Stewart took on Jim Cramer and really blasted him. Again, I only saw clips of it on Hulu or whatever it is that I am watching.
在你的书里,你提到那些评论员是提供娱乐,而不是在教育或充当教育者。你觉得乔恩·斯图尔特,在不选边站的情况下,会不会是让克莱默承担了更多责任,而不是仅仅把他看作一个娱乐人物?换句话说,是不是给了他一个言不由衷的恭维?[笑]
And in your book you mentioned the pundits being entertainment and not educating or not being educators. Do you think Jon Stewart, without choosing a side, that he might have been holding Cramer a lot more accountable and not seeing him as an entertainer? In other words, giving him a back-handed compliment? [laughs]
Mauboussin:这是一个非常有趣的问题。我认为克莱默极具娱乐性。实际上我认为他的意图都是好的。我真的相信他确实想帮助别人。但作为一个观众……有一点是需要明确说明的,就是这一切的潜台词,关于我们对专家的讨论。
Mauboussin: This is a really interesting question. I think Cramer is highly entertaining. I actually think his intentions are all good. I truly think he really does want to help people. But I think as viewer…One thing is just that the undertone of all this is just to make this explicit about our discussions about experts.
事实上,作为人类,我们喜欢别人告诉我们未来会发生什么。
The fact of the matter is, as human beings, we love it when tell us what’s going to happen.
我们喜欢有人对我们说,“这就是你的未来,”对吧。
We love to have someone say, “This is your future,” right.
MartinKronicle: Yeah.
MartinKronicle: Yeah.
莫布森:这种感觉非常令人满足,而如果有人以权威口吻这么做,那就更好了。所以像克莱默这样的人,在我看来,显然是个娱乐家。但我觉得很多人把他当成教育者,并且急于采纳他给出的建议。
Mauboussin: It’s a deeply satisfying sensation, and, when someone does with authority, all the better. So someone like Cramer is, to me, clearly an entertainer. But I think that many people view him as an educator and are quick to take the advice that he gives.
跟你一样,我也可能在 YouTube 上看到了那段视频。但我认为难点在于,当你处于克莱默那样的位置时,这意味着巨大的责任。
Just as you did, I watched that probably on YouTube. But I think the challenge is, when you are in the position like Cramer is it comes with an enormous amount of responsibility.
娱乐者和教育者之间的这些区别变得非常难以把控。
Those distinctions between entertainer and educator become very difficult to manage.
我认为这是他所面临的挑战之一。事实是,对于大多数个人投资者——很可能也是这个节目的多数观众——最好的做法是构建一个多元化的投资组合,使用低成本指数基金,然后继续过自己的日子。没错。如果他们想拿一些闲钱来玩玩,那也没问题。
I think that’s one of the challenges he’s faced. That fact of the matter is, for most individual investors, probably most of the viewers of that show, are best off building a diversified portfolio, using low cost funds and just getting on with their lives. Right. If they want to play around, with some side money, that’s fine.
不过,我认为这是一个重要的问题,它……
But, I think that’s an important issue that
斯图尔特加码了。显然,他做的是在找克拉默今天说一套、明天又说另一套之间的矛盾之处。
Stewart raised. Obviously, what he’s doing is finding conflicts between Cramer saying one thing one day and something different the next
但这是一个具有挑战性的问题。
day. But it’s a challenging issue.
作为这样一个高度公众化的人物,参与这类讨论,确实责任重大。
There’s a lot of responsibility, being a very public figure like that with those kinds of discussions.
马丁·克朗尼克:对,先说明一下。我以前说过一次,但既然大家觉得我挺有主见的,那就再说一遍。我觉得克拉默的初衷是好的,他想当个教育者。我认为他曾经是个非常出色的法学院学生——你们有些人可能不知道,他上过哈佛法学院。我觉得他的书《华尔街瘾君子自白》写得还不错,挺谦卑的。但我认为,他可能更适合在你身边,在哥伦比亚商学院工作。不过,那样他就不可能在 CNBC 上有现在这么大的影响力了。
MartinKronicle: Yeah, for the record. I’ve said it once before, but I’ll say it again because people kind of see me as somewhat opinionated. I think Cramer’s heart’s in the right place, I think he wants to be an educator. I think he was a tremendous law student. He went to Harvard Law, if some of you don’t know that. I thought his book was pretty good: Confessions of a Wall Street Addict, was very humble. But, I think he might be better suited, working next to you at Columbia Business School. But, he wouldn’t have the reach that he does on CNBC.
Mauboussin: Right.
Mauboussin: Right.
马丁·科尼克尔:咱们现在回到专业选股的话题。你还提到了苏罗维茨基的《群体的智慧》。我通常喜欢书名里带“群体”的书:《非同寻常的大众幻想与群众性癫狂》、《群体的智慧》。
MartinKronicle: Let’s get back now to being an expert stock picker. You also mention Surowiecki’s The Wisdom of Crowds. I tend to like books that have crowds in the title: Extraordinary Popular Delusions and the Madness of Crowds, “Wisdom of Crowds.”
但人群真的有那么疯狂吗?
But are the crowds really that mad?
与其依赖乔治·米林-斯坦利、乔治·索罗斯或吉姆·罗杰斯之流,我何不上 Twitter 发条推文问大家:“你们觉得 Comex 黄金在到期时会结算在什么价位?” 这样难道不是更好吗?
Wouldn’t it be better for me to go to my Twitter feed and put it out there like, “Where do you think the Comex Gold is going to settle, by expiration” than to rely on George Milling-Stanley or George Soros or Jim Rogers for that matter.
莫布辛:是的。这是个很好的问题。
Mauboussin: Yeah. That’s a great question.
关于这一点,我马上想到几个问题。首先,你区分了“群体的智慧”和“群体的疯狂”,我觉得这个区分非常值得仔细思考。我认为苏罗维茨基在他的书里做得好的地方,是明确了群体在什么条件下是聪明的。我换一种说法来表达他的观点,但对我来说,有三个条件至关重要。第一是多样性。也就是说,我们的世界里需要有多样化的底层参与者和投资者。
There are a couple of things that come to my mind immediately on this. The first is you make this distinction between the wisdom of crowds and the madness of crowds, and I think that that’s a very important thing to think through carefully. I think what Surowiecki did in his book. He was good about, was specifying conditions under which crowds are smart. I’m going to rephrase what he says, but to me there are three conditions that are really important. First is diversity. So, we need to have diverse underlying agents and investors in our world.
第二个要素是一个运转良好的聚合机制:能把信息汇集起来的某种方式。这当然就是交易所。这样,你的声音和我的声音都能被听到。如果你比我更有钱,你的声音就会被更响亮地听到。
Second is a properly functioning aggregation mechanism: some way to bring that information together. That of course would be an exchange. Then, your voice and my voice can both be heard. If you have more money than me, yours will be heard at a greater level.
最后一条是激励——判断正确的奖励和判断错误的惩罚。我们的世界显然是金钱驱动的。所以更聪明的人赚更多钱,不那么聪明的人亏钱。因此,当上述条件中的一条或多条被违反时,就会出现群体性疯狂。
The final is incentives, which are rewards for being right and penalties for being wrong. Our world is obviously monetary. So, the smarter people get more money and the less smart people lose their money. So, when one or more of those conditions are violated, you get the madness of crowds.
迄今为止,最容易被违反的规则是多样性。于是,我们每个人都未能独立思考,反而开始以协调一致的方式思考,这种模式会走向极端。这就引出了第二个问题,如果你在琢磨怎么做:“嘿,我在考虑 12 月纽约商品交易所黄金期货,到期时它会结算在什么价位?我该怎么应对?”
By far the most likely to be violated is diversity. So, rather than each of us thinking independently, we all start to think in a coordinated fashion that leads to extremes. So, that leads to the second question, if you’re thinking about how: “Hey, I’m thinking about December Comex Gold, where will it settle at expiration? How will I go at that?”
所以,在我看来,最好的答案就是它当前在市场上的实际交易价格。没错。如果市场有效运转,它本身就是群体智慧的体现。这很可能是衡量这一点的最佳指标。我认为,不少不同方面的人一直有一种冲动,想追求我所谓的“群体元智慧”。
So, to me, the best answer for that is where it’s actually trading at the market today. Right. So, the market itself is the wisdom of crowds if it’s operating effectively. That’s going to be probably the best indicator of that. There’s been a temptation, I think, by a number of different parties to what I call the meta-wisdom of crowds.
就像我刚才说的,就是跑去你的推特上问大家:“嘿,黄金会收在什么价位?或者,六个月后苹果的股票会在哪里?”换句话说,我就是不太相信那种“群体的超然智慧”。群体的智慧叠加群体的智慧,可能会让你付出很大代价。这方面正反两面的证据都有,但对我来说,我对此就是持怀疑态度。
Which is, like I said, just going out on your Twitter feed and asking people, “Hey, where will gold settle? Or, where will Apple’s stock be six months from now?” I’m just not persuaded by that meta-wisdom of crowds, in other words. Wisdom of crowds on top of wisdom of crowds can buy you a lot. There’s been some evidence on both sides of that, but, to me, I’d just be skeptical about that.
所以,在我看来,更根本的分析方法是直接审视资产价格本身,然后问自己:“嘿,要让这个资产价格变得合理,需要发生什么?” 然后从这个角度出发。
So, to me, the more fundamental way to look at that is to look at the asset price itself and say, “Hey, what has to happen for that asset price to make sense?” Then go from there.
与其说我要回归更多专家的思路,或者“群体智慧”那类概念——如果这说得通的话。
Rather than saying I’m going to go back to more experts or meta-wisdom of crowds kind of idea, if that makes sense.
MartinKronicle:不,我觉得这说得通。
MartinKronicle: No. It makes sense to me.
于是我想到的问题有两个层面。第一,你是否认为,在任何给定时刻,价格已经最充分地反映了所有市场参与者的观点?我知道,像科维尔和他的营销机器会告诉你,价格说明了一切:你只需要跟着价格走就行。如果你做突破交易或移动平均线交叉,再设置好保护性止损,你其实不需要事先了解基本面,等事后再说。只要你跟上了趋势,原因根本不重要,重要的是方法。这是你的思路吗,就……
The question that comes up for me, then, is two-fold. One, do you feel that the price then contains the best reflection of all the participants at any given time? I know that with Covel and his marketing machine, he’s going to say that the price tells you everything: all you have to do is follow the price. If you do break-outs or moving average crossovers and put on your protective stops, you don’t really have to know the fundamentals until afterwards. As long as you get in on the trend, it doesn’t really matter the why; it’s the how. Is that your thinking, in terms of…
莫布森:对,那不是我们的方式。所以我认为第一点是,投资成功有很多种方法。我猜趋势跟踪者有自己的规则体系。你显然知道我们做的事——我们是基金经理,主要是长线多头基金经理。我们寻找的,具体来说,是信念与基本面之间的差异——我指预期与基本面。预期是某一股价里已经反映的财务表现,基本面是我们认为实际会发生的情况。你知道吗,上个周末肯塔基德比刚结束。
Mauboussin: Yeah, that’s not how we know, so I think that the first thing is that there are many ways to invest successfully. And I guess the trend followers have their own sets of rules. You know clearly what we do, we’re money-managers; predominately long money-managers. We’re looking for, specifically, discrepancies between what we believe is, well, I would call it expectations and fundamentals. Expectations are what financial performance is baked into a particular stock price. Fundamentals are what we think is going to happen. You know, we just had the Kentucky Derby last weekend.
那现在正好可以聊聊这种类比。投注牌上的赔率和预期代表资产价格,而马匹基于历史战绩、驯马师、骑师等因素跑出的速度则代表基本面。就算我能告诉你美国每一场比赛哪匹马会赢,这也赚不到钱;
So, this is a good time to bring up that type of metaphor. That the tote board, the odds and the expectations that would be the asset price. The speed of the horse based on the horse’s past record and trainer and jockey and so forth would be the fundamentals. I could tell you which horse is going to win every single race in America. That doesn’t make you money;
让你赚钱的,是计分板上的赔率和马的实际速度之间的错误定价。对我来说,这正是我们始终关注的核心问题。
what makes you money is mispricing between the tote board and the speed of the horse. To me, that is the key thing that we dwell on.
当然,我完全理解迈克尔的观点,也理解趋势跟踪者的想法。他们觉得也许有办法只看价格本身,而不去操心那些基本面。
Now, I definitely understand Michael’s point, I understand the trend followers point. It’s that there may be ways to simply look at price and not worry about those fundamentals.
但在某种程度上,总得有人去思考基本面。
But at some point, somebody’s got to be thinking about fundamentals.
所以,我认为他其实是在观察基本面交易者来回操作的下一步流程。没错,我们会看基本面与预期之间的差距,但从纯粹价格的角度,我理解他为什么这么说。
So, I think he’s looking at, in a sense, the next order process of what those fundamentalists are doing back and forth. Yes. We’d look at the fundamentals versus expectation gap, but I can see where he’s coming from on that, in terms of pure price.
马丁·克罗尼克尔:那我们来谈谈仓位规模吧。比如你之前提到的迈克尔·刘易斯,他写了我最喜欢的一本书,但也写了我最不喜欢的一本书。我实际上把《说谎者的扑克牌》从 12 层楼高的窗户扔了出去,但我很喜欢《点球成金》。所以,你琢磨去吧。
MartinKronicle: So, let’s talk about bet sizing, for example. You mentioned Michael Lewis before, and he’s written one of my favorite books, but also one of my least favorite books. I actually threw “Liar’s Poker” out of a 12-story window, but I loved “Money Ball.” So, go figure.
[laughter]
[laughter]
MartinKronicle:在书里,他讲到在一个五局制的棒球系列赛中,最差的球队有 15% 的概率会击败最好的球队。在准确率的游戏里,新手可能会坐下来说,“天哪,我绝不会在那种情况下押注最差的球队,因为 15% 的命中率根本就是失败,甚至比失败还差好几个档次”。但如果我们坐在一起,我们说,当那 15% 的结果真的发生时,你会赢到赌注 10 倍的金额。请你尽可能用通俗易懂的语言给大伙解释一下,一个准确的系统和一个有正期望值的系统之间的区别。
MartinKronicle: In the book, he talks about how in a five-game baseball series the worst team is going to beat the best team 15 % of the time. Now, in the game of accuracy, the neophytes might be sitting down saying, “Well, God, I’d never bet the worst team in those scenarios, because 15 % hit ratio is beyond failure. That’s several degrees below failure”. But, if we were sitting together, and we said, well when that 15 % rings true, you’re going to win 10 times your bet size. Explain to folks in lay person language as best you can, the difference between an accurate system and one that has positive expectation.
莫布森:确实如此。这个概念极为关键,你越年轻的时候学到它,你的人生就会过得越好。我可以用我那个赛马的比喻来直接解释,因为我觉得这是一个非常非常好的阐释方式,对吧?
Mauboussin: Exactly. Such a crucial idea, and the sooner you learn about this when you’re young, the better off you’re going to be in life. I can go right back to my racehorse metaphor, because I think that’s a very, very good way to explain this. Right?
那么,你提到了这 15% 的时间。
So, you mentioned this 15 % of the time.
没错。所以,你判断这些事件发生的概率就是那样。你可以把这些概率换算成具体的赔率。如果赔付金额恰好反映了这些概率,那就没什么意思。换句话说,这种事大概只有六分之一的机会发生。那你能赚到不错的钱。但如果赔付条件在这点上存在缺陷,那就没多大意思了。
Right. So, you think those are the odds that that are going to occur. You can translate those into specific odds. If the payouts reflect specifically those odds, that’s not very interesting. In other words, it can only happen one-out-of-six times, roughly. And you’ll make good money. But if it’s deficient in that regards, it’s not very interesting.
有趣的是,这在某种程度上是一个 15% 的概率事件,但市场却按 5% 甚至 1% 的概率来定价。在这种情况下,回报将会远超预期。现在,顺便说一句,作为交易员,你们这些人往往比我那个世界里那些无聊的老派股票人士要强得多。但理解这一点的关键在于,如果你能
What is interesting is somehow it’s a 15 % probability, but it’s getting priced as if it’s a 5 % probability or a 1 % probability. In which case the payoffs will vastly exceed. Now, the thing is, by the way as traders, you guys tend to be much better than many people in my world, like boring old stock people. But, the key to understanding this is that if you can
找到足够多的这类机会。对。因为,就像你说的,大多数情况下——六次里有五次——你都会输掉这个赌注,对吧?所以,如果你能找到足够多这样的机会,把这些交易做进去,构建一个投资组合,那么这些机会带来的回报将远远超过损失。
find enough of these types of situations. Right. Because, more times than not, like you said, five out of six times, you’re going to lose on this bet, right? So, if you can find enough of these situations and put those trades on and build a portfolio of them, the payoffs from those things will vastly exceed.
换句话说,在大多数情况下你会亏钱,但赚到的钱会弥补亏损时的损失。所以,这个理念在我们自己的机构里被反复提及。这就是频率与幅度之间的区别。顺便说一句,我第一次读到这个——或者说,它在我脑海中真正成型——是通过纳西姆·塔勒布的一本书……
In other words, you’ll lose money majority of the time, but the money you make will make up for how much you lost when you lost. So, this is an idea we go back to a lot in our own organization. This is the difference between frequency and magnitude. By the way, I first read about that, or sort of solidified in my mind, through Nassim Taleb’s book…
马丁·克罗尼克:对。我本来要提他,但你先说吧。
MartinKronicle: Yeah. I was going to bring him up, but go ahead.
莫布辛:……“随机漫步的傻瓜”。
Mauboussin: …”Fooled by Randomness.”
是的。所以,这个故事是这样的——我不知道是不是杜撰的——塔勒布讲过他跟一群交易员同事坐在房间里闲聊股市的事。有个人转过头问他:“塔勒布,你觉得下周市场会怎么走?”他说:“我觉得会涨。”然后,另一个交易员在对面喊:“嘿,可你的交易账户是做空的啊。”
Yeah. So, the idea would be, the story, I don’t know if it’s a apocryphal. But, Taleb tells the story of sitting around a room sort of shooting the breeze with his colleague traders about the stock market. A guy turns to him and he says, “Taleb, what do you think the market’s going to do next week?” He said, “I think it’s going to go up.” Then, another trader yells across, “Hey, but you’re short on your trading book.
换句话说,你赌的是这个赌约会输。那么,你怎么解释这一点?”他说他认为市场有 70% 的概率上涨 1%,30% 的概率下跌 10%。
In other words, you bet that the bet is going to go down. So, how do you reconcile this”. And he said his belief was there’s a 70 % chance the market would be up 1 % and a 30 % chance it would be down 10 percent.
所以,市场的概率是会上涨。但这个情况下的期望净值是负的。这个道理很容易迁移到股票世界。举个例子,一只成长股,一只人人看好的股票,它的定价已经包含了成功的预期。假设它明天要公布财报——有 70% 的概率会符合或超出预期,股价会小幅上涨,比方说涨 1%;但有 30% 的概率会令人失望,股价会下跌 10%。
So, the probability is the market would be up. But, the expected value net in that instance is negative. That’s a very easy thing to translate over to the world of stocks. So, for example, a growth stock, a stock that everybody loves, it’s priced for success. Let’s say they’re going to report earnings tomorrow. A 70 % chance they match or exceed expectations, the stock would go up a little bit, 1 % lets say, but there’s a 30% chance they disappoint. The stock goes down 10 %.
这个概率很高,但期望值却很糟糕。你可以反过来想……假设有一只人人唾弃的股票,70% 的概率还会有坏消息爆出,不过它只跌了 1%。
That’s a great probability, but a very poor expected value. You can flip that and say… Let’s say the downtrodden stock that everybody hates… A 70 % chance that more bad news comes out. It only goes down 1 %.
这些因素大部分已经反映在价格里了,但有 30% 的可能他们表现更好,或者发布重组消息之类的,那只股票就会上涨 10%。从概率上看是个糟糕的赌注,但从预期价值看却是绝佳的。所以,对于投资或交易的人来说,关键就是要像你刚才说的那样,始终思考预期这个概念。要算清楚这笔特定赌注、这笔交易的预期价值是多少。这就是指导原则——你应该去做那些预期值为正的交易。
Most of that’s already reflected in the price, but a 30 % chance that they do better, or there’s a restructuring announcement, or what have you, and that stock goes up 10 %. A bad probability bet, but an excellent expected value bet. So, the keys is for that people who are investing or trading is to always think about, as you said, the term expectation. What is the expected value of that particular bet, that trade. That is the guiding principle, that you want to put on positive expectation bets.
它们不总是高概率的赌注,但必须始终是高期望值的赌注。
They’re not always high probability bets. They always have to be high expectation bets.
MartinKronicle:是的,我基本就是为预期而活。你提到塔勒布还挺有意思的。说到肥托尼,我读过《黑天鹅》和《随机漫步的傻瓜》。对我来说,那两本书太精辟了,我每次只能读一章。
MartinKronicle: Yeah, I pretty much live for expectation. It’s interesting, that you bring up Taleb. Speaking of Fat Tony, I’ve read “Black Swan” and “Fooled by Randomness.” For me, those books were so pithy I had to take them a chapter at a time.
他绝对是个性格独特的人,塔勒布就是如此,这么说已经是客气了。我倒想跟他喝杯法国红酒,再放点德国音乐,看看他什么反应。
He’s definitely a unique personality, Taleb is, to say it nicely. I’d like to have a glass of French wine with him, with some German music playing, actually, to see his reaction.
咱们再说说这 15% 时间的把戏。塔勒布管理资金的方法,就是去博所谓的“肥尾”。不是要跟您聊棒球内行话,但他其实赌的是准确率只有 1%,甚至 0.5% 的交易。他找的就是那种极不对称的回报。
Let’s go back to this 15 % of the time racket. Taleb’s approach to running money is to play the fat tails, as they’re called. Not to get inside baseball, but he’s actually playing for trades that are 1 %, or 1/2 of a percent accurate, really. He’s looking for those really asymmetric payoffs.
我觉得新手交易者,就是那些正在听莫布森和我说话的人,还需要考虑另一件事:你必须拥有一种非常特殊的情感素质,让自己几乎一直承受犯错的感觉,因为这就是塔勒布的常态。他大多数时候都是错的,但一旦他对了,那就对得离谱。
I think the other thing to consider for the new trader out there who’s listening to Mauboussin and myself, is that you have to have a very special emotional constitution that can take being wrong almost all of the time, because that’s what Taleb does. He’s wrong most of the time, but when he’s right, he’s right sickly.
莫布辛:是的,你再想想这具体是怎么运作的。你拿 100 美元,他常常……他历史上做的是,他会拿这笔钱去买深度虚值的看跌期权和看涨期权,就为了那个效果。深度虚值,所以你只花一点点钱。你的本金一点一点地往下耗,再往下耗,然后,就像你刚才说的,时不时地来一次……尾部事件被错误定价了,于是你获得巨大涨幅。就是跌、跌、跌、跌,稍微跌一点,然后猛涨一大截。跌、跌、跌、跌,涨。再说一遍,绝大部分时间里你都在赔钱。比例虽然小,但……
Mauboussin: Right, and you think about how that works. You take $100, and what he often did… What he did historically is that he would take the money and buy deep out of the money. Puts and calls, just for the point. Deep on the money, so you’re spending a little bit of money. You’re drawing down just a little bit, little bit, and then, as you said, episodically it goes… Tails are mispriced, so you get these huge increases. It’s down, down, down, down a little, and then up a lot. Down, down, down, down, up. Again, the vast majority of the time you’re drawing down. It’s a small percent, but
你在逐步减持。我和他聊过这事,也问了他这个问题。在我看来,我觉得他认为自己打交道的好多客户对此非常不自在,因为他们的月度报表里,十有八九会显示本金在一点点减少。
you’re drawing down. I talked to him and asked him about this. To me, I think he believes that many of the clients that he dealt with were very uncomfortable with that, because more times than not, their monthly statements will be showing them down a little
比特。作为人类,我们总是喜欢自己是对的。我们喜欢正确的时候比出错的时候多,所以这种操作方式对很多人来说非常别扭。因此,想要做到这一点,确实需要一种不寻常的心理素质。
bit. That’s something that, as humans, we like to be right. We like to be right more than we’re not right, and so that was a very uncomfortable approach for many people. So, that definitely takes an unusual psychological makeup to be able to do that.
MartinKronicle:你实际上是在向人们推销一种系统性的资本损耗,说,“嘿,我们的生意就是沙滩的侵蚀!”
MartinKronicle: You’re effectively selling people on systematic attrition of capital, saying, “Hey, our business is erosion of the beach!”
莫布森:没错,不过得时不时地倒沙子,对吧?
Mauboussin: Exactly, although with the periodic dumping of the sand, right?
MartinKronicle:对,正是这样。
MartinKronicle: Right, exactly.
莫布森:这跟情绪有关……这又要回溯到——你也研究过这方面。我也只是把它挑明了说。我觉得这就是为什么,根据我的理解,交易那么难做。你看那些讲交易高手的文章,他们说自己做的交易里 70% 是亏钱的,但就像你以前指出的,你可以把亏损控制在有限范围内。30% 的交易是赚钱的,而其中极小一部分赚钱的交易,几乎贡献了所有回报。我想大多数人会觉得:“嘿,你上班去,70% 的时候都是错的、错的、错的?” 那种活法很难受,但如果你能在情绪上扛住,又理解背后的数学原理,那就是一条很好的谋生之道。
Mauboussin: It’s emotional… This goes back to, and you’ve looked at this before. I’m just making this explicit, as well. I think that’s why trading from my understanding, is so difficult to do. You read about these trading guys, and they’ll say 70 % of the trades that they put on lose money, but as you pointed out before, you can limit that loss. Thirty percent of the trades make money, and just a very small fraction of those positive trades carry almost all of the freight, in terms of returns. I think most people feel like, “Hey, you’re going to go into work, and 70 % of the time you’re going to be wrong, wrong, wrong?” That’s a very difficult way to go through life, but if you can deal with it emotionally, and understand the mathematics of it, that’s a great way to make a living.
MartinKronicle:就我而言,我觉得不妨直接回答这个问题,因为正如伊曼努尔·康德所说,我是“后天性”的。
MartinKronicle: I think for me, and I might as well answer this, because I have, as Immanuel Kant would say, “a posteriori”
这里的诀窍是:我依靠自己恪守的纪律,坚持自己的体系,并且明白,即便我已经连输了五六次,我仍有纪律去执行第六笔交易,而不去理会自己连吃五个小亏后是什么感觉。我看待问题的方式……这就对应了你说的“遵循过程,而非结果”。我对结果无能为力。
knowledge here. That is, I take refuge in stick the discipline that I have, and sticking to my system, and knowing that even if I’ve lost five or six in a row, I have the discipline to put on the sixth trade, despite how I might feel about having five small losers. I don’t look at it… That goes to your point on following the process, not the outcome. I’m powerless over the outcome.
莫布辛:不过,我得说,这得归功于你。我觉得有些人……我们中有些人在这件事上比其他人更擅长。对每个人来说,这都不容易做到,所以这是你的本事,也是你干得这么好的原因。但我觉得,对很多人来说,这件事并不容易。
Mauboussin: But, I would say that’s a tribute to you. I think that some people… Some of us are better at it than others. It is not easy for everybody for everybody to do, so that’s a tribute to you, and that’s why you’re good at what you do. But, I think that’s not easy for many people.
MartinKronicle:嗯,谢谢。我想聊聊“反热手效应”,跟篮球有关。你刚才提到 70%,这是个伏笔。我看篮球数据时发现,斯科蒂·皮蓬和另一位公牛队球员入选了名人堂。但明显缺席的是丹尼斯·罗德曼——我觉得,如果他没有加入那支球队,就不会有斯科蒂或迈克尔,因为他能在球场两端抢下篮板。当然,这只是我的看法。
MartinKronicle: Well, I appreciate that. I want to talk about the anti-hot hand, as it relates to basketball. You said 70 %, which is a foreshadowing here. When I look at basketball statistics, I saw that Scottie Pippen and another Bull were inducted into the Hall of Fame. Noticeably absent was Dennis Rodman, who I think, if he wasn’t on the team, there wouldn’t be a Scottie or Michael, because he came down with the boards on both sides of the court. But, that’s just me.
根据我看到的数据统计,迈克尔·乔丹的投篮命中率大约是 50%,但所有人都知道他是一个伟大的赢家,他总能在关键时刻提升比赛水准并完成任务。然而,当你回顾他的数据时,他从未稳定地打出 80% 的命中率。职业生涯中,他的命中率始终卡在 50% 上下两个百分点之间——这听起来并不那么出色。这意味着他有一半的时间在失手。说到反手热效应,如果沙奎尔·奥尼尔——无论他当时效力于哪支球队——在篮下抢到进攻篮板,他都会直接跳起来把球灌进篮筐,两分球的命中概率接近 100%。但后来,他们发明了一个你可能听说过的策略,叫做“砍鲨战术”。这套策略是:当沙克拿到球时,你就狠狠砸他的脸,或者用力撞击他,总之是诱导他犯规。原因是他的罚球命中率只有 70%。所以,用你们的语言来说,用一个简单的方式表达……我想你应该明白我要说什么了。
Michael Jordan, if I read the statistic correctly, shot about 50 % from the floor, but everyone knows him as this great winner, where he would rise to the level of the game and get the job done. But when you look back at his statistics, he never shot 80 % consistently from the floor. It was right within two percentage points, career wise, of 50 %, which… It doesn’t sound that great. It means you’re failing half the time. Going to the anti-hot hand, if Shaquille O’Neal, regardless of who he was playing for, got an offensive board underneath the basket, he would come up and slam it down for a 100 % probability of a two point thing. Now, they came up with something you may of heard of called “Hack-a-Shaq.” The strategy was when Shaq gets the ball, you smash him in the face, or you hit him hard, basically, and you induce the foul. The strategy was that he was only 70 % from the free throw line. So, in your language, in an easy to say… I think you probably see where I’m going with this.
你能给大伙儿解释一下,为什么奥尼尔罚球命中率只有 70% 时,“砍鲨战术”居然是种名副其实的策略?
Can you explain to the folks why Hack-A- Shaq was a bona fide strategy when he was 70 % from the line?
莫布森:当然可以。顺便说一句,我上周正好在看这些统计数据。一名职业生涯场均投篮命中率达到 60% 的 NBA 球员……
Mauboussin: Sure. By the way, I was actually… It so happens that I was looking at these statistics last week. An NBA player that has a 60 % field goal percentage over their
在你整个职业生涯里,能达到这个命中率就算相当不错了……最顶尖的球员职业生涯能达到六成左右的投篮命中率。这些通常是大个子球员,对吧?比如沙克、威尔特·张伯伦、比尔·拉塞尔这类人,因为他们靠近篮筐,就像你说的那样。
career, that’s as good as… The best guys are in the 60 % range from the field over their career. That tends to be big guys, right? So, it’s guys like Shaq and Wilt Chamberlain, and Bill Russell, those kinds of guys, because they’re down by the basket, as you pointed
他们做了大量的上篮动作,而如今更多的是扣篮。
out. They’re doing a lot of lay-ups, and nowadays it’s a lot of dunks.
顺便说一句,迈克尔·乔丹……50%,这比例确实相当高。很多后卫命中率在 48% 到 49%,所以他显然是个非常出色的投手。勒布朗的数据近来也极为惊人。你说奥尼尔罚球命中率 70%,我觉得这已经非常慷慨了。实际上,他的真实数据远比这个低。所以,作为教练,实际决策正如你指出的那样——就是算笔数学账,对吧?如果他在低位拿到球……比方说,在特定情况下,他可能有 70% 或 80% 的把握打进 2 分,那期望得分就是 1.5 或 1.6 分。如果你把他送上罚球线,他罚球命中率大约 50%。算一下就清楚了。他连续罚中两个球的概率是多少?0.5 乘以 0.5 等于 0.25,再乘以 2,对吧?所以,期望得分就是 0.5 分,对吧?
By the way, Michael Jordan… 50 %, that’s a really good ratio. A lot of guards are in the high 40s, so he was obviously a pretty good shooter. LeBron’s numbers recently have been extraordinary. I think you were being very generous when you said Shaq was 70% from the free throw line. I think that number’s actually quite a bit lower than that. So, the actual decision as a coach is exactly what you pointed out, which is you just work out the math, right? If he gets the ball down low… Let’s say, if it’s a particular situation, he may have a 70 or 80 % chance or making that, making two points, so it’s an expectation of 1.5 or 1.6 expected points. If you put him on the foul line, he’s about a 50 % foul line shooter. Just do the math. What’s the probability of him making two in a row? It’s .5 times .5, so .25, times 2, right? So, that’s .5, right?
那么回到我们的期望值——数学上的期望值要大得多,你应该对他犯规,让他上罚球线,去赌他罚球,而不是让他从篮下投出七八成命中率的球。我不知道……我怀疑有多少篮球教练会掏出计算器这么算,但这就是犯规战术的精确依据。我认为,在这种情况下,他们观察得足够多,历史经验把他们引向了正确的解决方案。就是这样。但反过来,当然,如果那个家伙是个出色的罚球手,是联盟历史上最好的之一,命中率在 90% 左右。那这些小家伙你就不想对他犯规,因为他有 80% 或 90% 的概率两罚全中,那可能……对于一个普通后卫来说,这几乎是两倍或更高的概率,接近他在运动战中投篮命中率的两倍。
So, the math, going back to our expectations, the expectation’s much, much better that you should foul him, let him go to the line, and take his chances there than letting him do a 70 or 80 % shot from down low. I don’t know… I doubt many basketball coaches are pulling out their calculator and doing the math that way, but that’s precisely the justification for it. I think, in this case, they observed enough, and their history guided them toward the right solution. That’s it, but on the flip side, of course, if the guy’s a great free throw shooter, the best in the league over time, and around 90 %. These little guys you don’t want to foul, because there’s a really good chance, there’s a 80 % chance or 90 % chance that they’ll make two in a row, and that’s probably… For an average guard, that’s almost twice as high or more. Close to twice as high as they’d do from the field.
MartinKronicle:那么,考虑到这一点,这就是策略。关键在于管理你的损失,这样你就不会让勒布朗或科比这样的人去犯规,因为你希望他们留在场上。你必须使用一个可牺牲的球员,一个你不介意他犯满离场的球员。所以,你要管理你的损失。
MartinKronicle: Now, with that in mind, that’s the strategy. The thing there would be to manage your losses, so you wouldn’t have someone like LeBron or Kobe go making the foul, because you want them on the floor. You have to use an expendable player who you don’t mind fouling out of the game. So, you manage your losses.
还有两件事,然后我们就说再见了。我不想占用你所有的时间,但我真的很感激。我认为无论是外行还是专家,都会从你迄今为止的谈话中学到很多东西。我们来谈谈证伪。我们天生不擅长证伪。我们买入 Research in Motion。我们买入谷歌。我们在 BP 或高盛股价大幅下跌时买入,然后我们寻找验证。这是我们天生的思维方式。在你的书里,你讨论了证伪或逆向思考如何可能对投资者或交易者更有利。你能详细谈谈吗?
Two more things, and then we’ll say goodbye here. I don’t want to take up all of your time, but I really appreciate this. I think the layperson, as well as the expert, is going to get a lot of what you’ve been talking about so far. Let’s talk about falsification. We’re not built to falsify stuff. We buy Research in Motion. We buy Google. We buy BP or Goldman Sachs on the big draw down that they’re going through right now, and we’re looking for verification. That’s how we’re built. In the book, you discuss how falsification or contrarian style thinking might actually be better for a person who is an investor or a trader. Can you elaborate on that?
Mauboussin:是的,我们讨论过黑天鹅这个概念。我认为现在几乎所有人都把黑天鹅和那些肥尾、那些意料之外的极端事件联系在一起。但黑天鹅当然也有一个哲学传统,恰好指向这一点。这可以追溯到哲学家卡尔·波普尔。
Mauboussin: Yes, we talked about this idea of the black swan. And I think now almost everybody associates the black swan with these fat-tails, these extreme events that are unexpected. But of course the black swan has got a philosophical tradition that is exactly to this point. And it goes back to Karl Popper, the philosopher.
MartinKronicle: Right.
MartinKronicle: Right.
Mauboussin:波普尔的观点是,这是关键。每个人都在寻找验证。
Mauboussin: And Popper’s point was, this is a key thing. Everybody looks for verification.
这将成为你做事的自然方式。波普尔的观点是,假设你的论点是所有天鹅都是白的。那么看到 1000 只、100 只或 10000 只白天鹅并不能证明这个论点是真的,尽管它可能给你一些证据。但看到一只黑天鹅就证明它不是真的。所以,检验一个理论最快的方法就是寻找证伪,黑天鹅这个概念就来源于此。
It’s going to be your natural way of doing things. Popper’s point is, let’s say your thesis is all swans are white. Well seeing 1,000, 100, or 10,000 white swans doesn’t prove that case is true, although it may give you some evidence for that. But seeing one black swan proves that it’s not true. So the quickest way to test a theory is to look for falsification, and that’s where this idea of the black swan comes from.
所以,回到你的观点,我们脑子里都有模型,有关于世界如何运作的理论。一旦你建立了一个关于世界如何运作的理论,你立刻就会走出去,开始寻找确认的证据。事实上,心理学家专门称之为“确认偏误”,这意味着一旦你
So, to your point, we all have models in our mind, theories of how the world works. And once you’ve developed a theory of how the world works, you immediately go out and you start looking for confirming evidence. In fact, psychologists very specifically call this the confirmation bias, which says once you’ve
做出了一个决定,你就倾向于寻找确认的证据,而否认或忽视不确认的信息。所以你基本上把它抛在一边。我认为,世界上最好的思考者是那些——顺便说一句,这在情感上非常非常困难——是那些专门寻求证伪的人。也就是说,如果他们有一个想法、一个信念、一个理论、一个论点,他们试图证明它是错的,而不是去验证它。顺便说一句,在这方面最伟大的思想家之一是查尔斯·达尔文,他在这方面很有名。他在 150 年前提出了自己的理论,在他的笔记中,他不断质疑自己,通过寻找证伪来不断判断自己的理论是否有效。
made a decision you tend to seek confirming evidence and disavow or disregard dis-confirming information. So you basically blow it off. The best thinkers in the world, I think, are people that, and it’s very, very difficult, by the way, emotionally, are people who very specifically seek falsification. So that if they have an idea, a belief, a theory, a thesis, they seek to prove it wrong versus to validate it. By the way one of the greatest thinkers is in this regard was, who was famous for this, is Charles Darwin, who developed his theory 150 years ago, and in his notebooks, constantly was questioning himself, constantly judging whether his theories were valid or not by looking for falsification.
所以就是这样。我给你举一个小例子,说明我们如何尝试使用这种方法:通常,当分析师与公司管理层面谈时,例如,他们会问各种引导性问题,以试图验证自己的观点或确认自己的论点。我告诉我们的分析师要做或建议他们做的事情是,以完全相反的方式提问。所以无论你相信什么,你都用相反的方式提问,然后听他们如何反应。这样你可能会得到一个非常不同的观点。
So that’s the thing. I’ll give you one trivial example of how we try to use this is that, often when analysts are interviewing with management teams, for example, they ask all sorts of leading questions to try to verify their own points of view or confirm their own thesis. What I tell our analysts to do or suggest they do is ask the questions in the exact opposite way. So whatever you believe, ask the question in the opposite way, and listen to how they react. You might get a very different point of view that way.
所以这是一个非常重要的自律。它非常困难,因为这意味着如果你错了,你必须改变你的观点,但对于良好的思维和具有适应性、灵活的思维来说,这绝对是至关重要的。
So this is a very important discipline. It’s very hard because it means that if you’re wrong you have to change your point of view, but it’s absolutely essential to good thinking and being adaptable, adaptive thinking.
MartinKronicle:嗯,你说的比我预想的要清楚得多。我很幸运上过学。我去了哥伦比亚大学,你在那里教书,我有机会遇到来自不同生活背景的人,无论是经济上、政治上、阶级上还是文化上。当我从根本上审视事物时,我对自己说:“贝鲁特的某某人会怎么看这个?
MartinKronicle: Well that says it a lot more clearly than I would presume. I’ve been lucky enough to go to school. I went to Columbia, where you teach, and I was able to meet a lot of folks from a lot of different walks of life, both economically, politically, class and culture. And I said to myself as I’m looking at things fundamentally, “How would so and so from Beirut look at this?
喀麦隆的某某人会怎么看这个?密歇根州卡拉马祖的某某人会怎么看这个?”然后试着说:“好吧,我没有所有答案,这些观点中哪个可能更有分量?”我不知道这是否能帮助
How would so and so from Cameroon look at this? How would so and so from Kalamazoo, Michigan look at this?” And then try to say “Well, I don’t have all the answers, which of these might have more magnitude?” And I don’t know that it helps
我。它所做的是帮助我摆脱自己的局限,摆脱我自己那种短视的思维。
me. What it does is it helps me get out of my own way, my own kind of myopic thinking.
这从字面上和象征意义上都打开了我的世界。
And that opens up my world literally and figuratively.
Mauboussin:嗯,迈克,我认为这又回到了我们之前讨论的多样性问题。这很有趣,因为有一些关于个人如何思考的研究。它们回到了刺猬和狐狸这个概念,也就是那些愿意考虑不同观点的人。而我们大多数人通常都有点思维懒惰;一旦一个话题出现,我们就会思考它,然后我们喜欢自己的思考方式,就关掉了所有其他可能性。所以,当你坐在那里,面对一个问题,说“让我想想别人会怎么想这个问题”,从某种意义上说,你是在向自己的思维过程注入多样性,这让你的大脑可能得出或找到更好的思考方式,而不是那种只说“这是我的观点,其他什么都不重要”的人。顺便说一句,这需要一些精力,正如你所知。
Mauboussin: Well Mike I think that goes back to what we were talking about with diversity. And that’s interesting because there have been these studies of how individuals think. And they go back to this idea of these foxes, people that are willing to consider different points of view. And often what most of us do is we’re kind of mentally lazy; once we topic comes up, we think about it and we kind of like our way of thinking about it and we sort of shut off all alternatives. So for you to sit there and take on a problem and say “Let me think about this as other people might think about this, ” in a sense you’re injecting diversity into your own thought process and that allows your mind to probably come to or settle on better ways of thinking about it than the person who just says, “Here’s my point of view, nothing else really matters.” By the way, it takes some energy, as you know.
MartinKronicle: Yes.
MartinKronicle: Yes.
Mauboussin:这需要一些时间,正如你所知。
Mauboussin: It takes some time, as you know.
这可能是在开车的时候,或者坐在浴室里思考的时候,但这需要时间。但对于良好思考来说,这绝对至关重要。
It may be driving around or sitting in the shower, but it takes some time. But it’s absolutely vital to thinking well.
MartinKronicle:我最后一个问题其实更像一个陈述,而且算是一个比较简单的问题。这是一个很好的结束问题。我大概可以相当确定地说,我们俩都深受已故的伟大人物彼得·伯恩斯坦的影响,他写过一些我读过的最好的金融书籍。在你的书里你引用了他的一句话:“后果比概率更重要。”你能谈谈这一点,以及它如何反映我们今天讨论的内容吗?
MartinKronicle: That last question I have for you is more of a statement, and it’s kind of an easier one. It’s a good last question to have. I can say, probably with decent certainty, that we’re both pretty much influenced by the late, great Peter Bernstein, who wrote some of the best books on finance that I’ve come across. And one of the things that you quote of his in your book is that “consequences are more important than probabilities.” Can you discuss that as it reflects the things we spoke about today?
Mauboussin:是的,首先,他确实是,他是一位真正的伟大思想家。他实际上为我和阿尔·拉帕波特合著的第一本书写了序言,这对我来说是莫大的荣幸,我们还互通了信件。他是少数几个真正会写信的人之一,非常深思熟虑。他在很多方面都是一个非凡的人。
Mauboussin: Yes, first of all, he is, he was one of the real great thinkers. He actually wrote the forward to my first book that I wrote with Al Rappaport which was a great honor for me, and we traded letters. He was one of the few guys who actually used to write letters, incredibly thoughtful. And he was an extraordinary man in many ways.
MartinKronicle:巨大的损失。
MartinKronicle: Big loss.
Mauboussin:即使在晚年,他也极其高产,思维活跃。真是个了不起的人。他喜欢用帕斯卡的赌注这个思想。帕斯卡问了一个问题:“上帝存在,还是不存在?”上帝存在吗?他通过一个小矩阵来思考各种可能性,基本结论是,嘿,你应该假设上帝存在,因为那样你会过更好的生活。如果他不存在,那么你会放弃一些快乐,但你仍然会过得很好。
Mauboussin: Even in his later years, extraordinarily productive, highly active mind. Just a great guy. He liked to use this idea of Pascal’s wager. Pascal asked the question “Is God, or is God not?” Does God exist? And he went through a little matrix of thinking about the alternatives and the basic conclusion was, hey, you know you should act as if God is, because then you’ll lead a better life. If He’s not, then you’ll have given up some pleasures, but you’ll still be in good stead.
MartinKronicle: Right.
MartinKronicle: Right.
Mauboussin:但另一方面,如果你追求了那些快乐,而他确实存在,那么你将永远被诅咒。
Mauboussin: But if he is, on the other hand, if you sought those pleasures and He does exist, then you’re going to be damned into eternity.
为了从更世俗的角度来看待这个,我给你讲一个我个人的故事。
To take a little more secular view of this, I’ll give you one personal story on this.
对我而言,尤其是在经历 2008 年股市动荡的时候,在那段动荡期间,如果你在任何时候和我谈话,我都会告诉你,我的投资组合中持有的现金比例是我一生中——以及此后——最高的。而且我大概会在之后不久告诉你,我认为股市的长期前景相当不错。事实上,我在 2008 年秋天写了一篇文章,借鉴了沃伦·巴菲特的一些思路,基本意思就是,从长远来看,一切看起来都不错。
For me, and this is going through the stock market turmoil of 2008 in particular, going through that turmoil, if you had talked to me at any point, I would have told you that I was at the highest percentage of cash in my portfolio that I’d ever been in my whole life and since as well. And I would have told you probably not too quickly after that I thought the long term prospects for the stock market were pretty good. In fact, I wrote a piece in the fall of 2008 picking up on some cues from Warren Buffett basically to that effect, just take a long term view, things look pretty good.
所以你会说:“好吧,你怎么能两头都占呢?你手里拿着现金,却告诉全世界你认为长期前景很好。”你在最开始就提到了这一点。我这么做的原因如下:我有五个孩子,我得供他们上大学。我认为市场在未来三到五年内大幅下跌的概率很小,可能是 5%、10%,我不知道,但很小。
So you say “All right, how are you having it both ways? You’re sitting on cash and you’re telling the world that you think the long term point of view is good.” You mentioned this at the very, very outset. Here’s why I did it; because I have five kids, I have to put these kids through college. And I thought the probability of the market going down substantially in the next three to five years was low, 5%, 10 percent, I don’t know, but low.
但如果那 5% 或 10% 的概率发生了,而我无法送孩子上学,那对我来说将是毁灭性的。所以我认为,在这种情况下,无法做到这一点的后果比概率更重要,所以我持有现金。
But if that 5 or 10 % appeared, and I couldn’t put my kids through school, that would have been devastating for me. So I thought the consequences in this case, of not being able to do that, are more important than the probabilities and so I sat on cash.
这就是一个非常个人化的例子,是我经历那段时期的体会。从理论上讲,可能有一种行动方案,但后果将难以承受。所以这就是我认为人们必须始终思考的点。如果一个低概率事件发生了,我的后果是什么,我能承受吗?
So that’s a very personal example of going through that. Intellectually, there may have been one course of action, but the consequences would have been too difficult to suffer. So that’s the point I think people always have to think about. If a low probability event occurs, what are my consequences and can I live?
顺便说一句,你在自己的圈子里肯定见过很多这种情况。我觉得经常能看到的就是过度下注。人们开始加杠杆,即便碰上低概率事件也敢下更激进的赌注,而且他们往往干得不错——正反馈也相当强烈。但一旦那 1% 或 2% 的事情真的发生了,形势朝不利方向走,你又加了杠杆,那就完了,对吧?交易的第一条规则就是:活下来,才能看到下一个交易日,对吧?
By the way, this is something you know a lot from your world. I think what you see a lot is this idea of over betting. People start to take on leverage, they put on more aggressive trades even in low probability events, and they’re going to do well, well the feedback will be good. But if the 1 % event shows up, or the 2 % event shows up, so it goes adversely and you’re leveraged, you’re done, right? And rule number one in trading is live to see another day, right?
MartinKronicle: Yes.
MartinKronicle: Yes.
莫布森:所以资金管理绝对是至关重要的。他们这是在违反资金管理原则。对我来说,这和我们之前聊到的交易紧密相关:后果比概率更重要,最终你必须要活到见证下一天。你必须管理好自己的事务,才能做到这一点。我觉得有时候我们会忘记或忽略这个教训,尤其是在这种乐观的时期。
Mauboussin: So money management is absolutely essential. So they’re violating principles of money management. To me, that would be the intimate link back to what we were talking about in trading is consequences are more important than probabilities is that ultimately you have to live to see another day. You have to manage your affairs so as to be able to do that. And I think that that’s sometimes a lesson that we lose or lose sight of, especially in these sort of optimistic times.
马丁·克罗尼克尔:我很欣赏你的坦率与诚实。 这是一次非常棒的对话,大概是我迄今为止做得最好的一次,而我之前跟不少相当聪明的人聊过。
MartinKronicle: Well I appreciate your candor and your honesty. This has been a great chat, probably the best one I’ve done so far, & I’ve done quite a bit with some pretty smart folks.
莫布辛:是的,那次交流非常愉快。
Mauboussin: Yes, it was great visiting with
太好了。问得很好,讨论也很关键。
you. Great questions and important discussion.
MartinKronicle:对,我这么认为,对所有类型的学生都适用。书名是《再想想:驾驭反直觉的力量》。
MartinKronicle: Yes, I think so, for all types of students. The book is called “Think Twice: Harnessing the Power of Counter Intuition.”
这本书可以在 Kindle 和精装版上买到。
You can get it on Kindle and hardcover.
迈克尔,和你交谈是一大乐事、一大荣幸。从《协同学观察》那会儿起,我就深受你作品的影响。
Michael, it’s been a great pleasure, great honor to speak with you. I’m influenced by your work since the days of Consilient Observer.