这次不一样

2019 (inferred) · memo · 原文约 6449 词
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Memo to:

Memo to:

Oaktree Clients

Oaktree Clients

From:

From:

Howard Marks

Howard Marks

Re:

Re:

这一次真的不同以往。

This Time It’s Different

我第一次看到这份备忘录的标题,是在 1987 年 10 月 11 日《纽约时报》上阿尼斯·C·华莱士写的一篇文章里,题目叫《为什么这轮市场周期并无不同》。文章这样写道:

投资中最危险的四个字是“这次不同”,这是备受推崇的 74 岁共同基金经理约翰·坦普尔顿的观点。在股市的顶部和底部,投资者总是用这套说辞来为自己情绪驱动的决策辩护。

未来一年,许多投资者可能会反复念叨这四个字,为更高的股价找理由。但他们应该像对待“支票已经在寄来的路上……”这种话一样,对这四个字保持同样的警惕。

然而,在这轮牛市进入第六年时,“这次不同”的合唱开始响起。华尔街专业人士预测,在牛市结束之前,那些一直按兵不动的个人投资者将被卷入市场见顶时特有的狂热之中。

他们会买股票,尽管道琼斯工业平均指数在过去五年里已经涨了两倍多。他们会听到一大堆极具说服力的理由,解释为什么股价应该继续上涨,为什么这轮牛市应该比历史上任何一次都持续得更久,为什么这轮繁荣之后不会跟着一场 1929 年式的崩盘,以及为什么“这次不同”。

这些论点中许多都很有诱惑力,因为它们确实含有几分真实。连坦普尔顿先生也承认,当人们说情况不同时,有 20% 的时候他们是对的。但危险在于,人们会以为那个不同的因素——比如最近日本人对美国股票的投资——会一路顺畅、永不停歇。

华莱士的核心信息是,当这四个字被广泛使用时,投资者必须警惕。为什么?回头看看引出上面那段引文的那一段:你第一次读的时候,有没有注意到出版日期?那正是“黑色星期一”(1987 年 10 月 19 日)之前仅仅八天,而那是股市历史上最糟糕的一天。我们知道市场一年跌 20% 有多难受。试试一天跌 22%!!华莱士的警告在文章发表时格外重要,但对我来说,它永远都重要。

I first came across the title of this memo in an article titled “Why This Market Cycle Isn’t Different” by Anise C. Wallace in The New York Times of October 11, 1987. It went as follows: The four most dangerous words in investing are “this time it’s different,” according to John Templeton, the highly regarded 74-year-old mutual fund manager. At stock market tops and bottoms, investors invariably use this rationale to justify their emotion-driven decisions. Over the next year, many investors are likely to repeat these four words as they defend higher stock prices. But they should treat them with the same consideration they give “the check is in the mail. . . .” Nevertheless, in the bull market’s sixth year, the “this time it’s different” chorus is beginning to be heard. Wall Street professionals predict that, before the bull market ends, individual investors, who have mostly stayed on the sidelines, will be swept along in the mania characterizing a market peak. They will invest in stocks despite the fact that the Dow Jones Industrial average has more than tripled in the last five years. They will be hearing overwhelmingly compelling reasons why stock prices should go higher, why the bull market should last considerably longer than any other in history, why this boom will not be followed by a 1929-like crash and why “this time it’s different.” Many of these arguments will be tempting because they will have some element of truth to them. Even Mr. Templeton concedes that when people say things are different, 20 percent of the time they are right. But the danger lies in thinking that the different factor – like the recent investment in United States stocks by the Japanese – will be uninterrupted. Wallace’s essential message is that investors must take heed when the four words are in widespread use. Why? Look back at the paragraph introducing the above quote: when you first read it, did you happen to notice the date of publication? It was just eight days before Black Monday (October 19, 1987), the worst day in stock market history. We know how bad it feels when the market falls 20% in a year. Try 22% in a day!! Wallace’s warning was particularly important at the time the article was published, but for me it’s always important.

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投资中,历史常态通常为资产价格设定边界。例如,牛市通常只有投资者摒弃标普 500 指数市盈率不应远超二战后平均 15 或 16 倍的观点,才会走向极端。如果标普 500 指数成分公司的盈利每年增长 10%,那么照定义,只有在市盈率被视为极具扩张性的情况下,指数才能每年上涨 20%(正如 1990 年代那样)。正是这种视角,让该指数在本世纪初达到 32 倍市盈率(对 2000 年至 2002 年的股市回报产生了极为负面的影响)。

想象一枚从卡纳维拉尔角发射的火箭。要逃离地球大气层,必须克服重力。同样,资产价格要挣脱历史束缚、直冲外太空,也必须克服过往常态施加的限制。如今,我们很少听到历史估值已无关紧要的说法,因为当前估值并不算过高。相反,我们被告知的是,这次不同的是对未来经济及市场表现限制的相关性:

  • 未来经济增长面临人口结构逆风;
  • 全球竞争加剧;
  • 技术颠覆加速;
  • 监管环境收紧;
  • 财政赤字膨胀;
  • 地缘政治风险上升;
  • 利率可能长期走低;
  • 企业盈利占 GDP 比重已处高位;
  • 以及种种其他因素。

Typically in investing, historical norms put limits on asset prices. Thus, for example, bull markets can generally go to extremes only if investors discard the notion that the p/e ratio on the S&P 500 stock index shouldn’t go much above its post-World War II average of 15 or 16. If the earnings of the S&P’s underlying companies grow at 10% a year, by definition the index can rise 20% a year (as it did in the 1990s) only if the ratio of price to earnings is viewed as highly expandable. It was such a perspective that allowed the index to reach 32 times earnings at the start of this century (with highly negative implications for equity returns in 2000-02). Think of a rocket launched from Cape Canaveral. Gravity has to be overcome in order for it to escape the earth’s atmosphere. Likewise, the limitations imposed by past norms have to be overcome in order for asset prices to slip their historic moorings and blast off into outer space. Today we’re not hearing much about historic valuations being irrelevant, as they’re not terribly high. Instead, what we’re told is different this time is the relevance of restrictions on future economic and market performance:         

不一定非要有经济衰退。

持续的量化宽松可以带来永久的繁荣。

联邦赤字可以大幅扩大而不会成为问题。

国债不足为虑。

我们可以拥有经济实力而不伴随通胀。

利率可以长期保持“低位更久”。

收益率曲线倒挂未必意味着负面影响。

企业即便没有利润也能蓬勃发展。

成长型投资可以永远跑赢价值型投资。

There doesn’t have to be a recession. Continuous quantitative easing can lead to permanent prosperity. Federal deficits can grow substantially larger without becoming problematic. National debt isn’t worrisome. We can have economic strength without inflation. Interest rates can remain “lower for longer.” The inverted yield curve needn’t have negative implications. Companies and stocks can thrive even in the absence of profits. Growth investing can continue to outperform value investing in perpetuity.

如今我很少参加一场会议,却没人不问起其中一两条论断的。归根结底,这九条中任何一条要成立,这次真得跟以往大不一样。下面我逐一谈谈每条的前景。

可避免的衰退——如今我最常被问到的问题是“美国会不会走向衰退?”和“什么时候开始?”对第一个问题,我的简单答案是“会”。(至少我永远不会被证明是错的。)经济周期一直存在,我相信将来也总会存在。最终,有利的发展会诱使人们基于过度乐观的假设行事,而最终那些假设的过度乐观会被戳穿,过度行为会在一段负增长期里得到修正。况且,即便没有过度迹象的经济体,也免不了受外部冲击。

人们问起即将到来的衰退时,他们多半想问的是“会不会还很遥远?”嗯,美国有记录以来最长的复苏持续了十年,而这一轮复苏已经进入第十个年头的第十二个月。没有理由说复苏不能超过十年;6 月 30 日不会有道闸门落下来,阻断进一步进展。还有一点值得注意,这是二战以来美国最 sluggish 的一次复苏,所以它并没有以向上的过度为特征,意味着未必需要按惯常的时间表来一场衰退式的修正。

I rarely participate in a meeting these days without someone asking about one or more of these propositions. The bottom line is that for any of the nine to be true, things really have to be different this time. I’ll discuss the outlook for each below. The avoidable recession – The questions I get most often these days are “Is the U.S. heading for a recession?” and “When will it start?” My answer to the first is a simple “yes.” (At least I can never be proved wrong.) We’ve always had economic cycles, and I believe we always will. Eventually, favorable developments will lead people to engage in behavior premised on excessively optimistic assumptions, and eventually the over-optimism of those assumptions will be exposed and the excesses will correct in a period of negative growth. Moreover, even economies that aren’t marked by excesses are subject to exogenous shocks. When people ask about the coming recession, what they mostly mean is “Might it be a long way off?” Well, the longest U.S. recovery on record lasted ten years, and the current one is in the twelfth month of its tenth year. There’s no reason a recovery can’t go beyond ten years; no gate will come down on June 30, foreclosing further progress. And it’s important to note that since this has been the most sluggish U.S. recovery since World War II, it hasn’t been characterized by excesses to the upside, meaning there needn’t be a recessionary correction on the usual schedule.

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不久之后,当前这轮经济复苏必将成为美国历史上持续时间最长的一次。然而,我认为,它更可能已接近尾声,而非刚刚开始。(我们永远无法确切预知未来会发生什么,至多只能从概率的角度去思考。这正是我最新著作副标题《让概率站在你这边》背后的思考逻辑。)复苏或许还会延续一段时间,但恐怕不会太久了。不过,我也不会就它何时结束下注。

大约一年半前,特朗普总统推行刺激性减税法案之后,人们开始问我,美国是否会效仿澳大利亚——该国上一次经济衰退是在 1990 年。虽然这与“是否再也不会有衰退”的问法不尽相同,但相隔 28 年才出现一次衰退的想法,若真实现,将意味着这一次的情况与以往截然不同。

我对上述问题的回答是“恐怕不会”,因为两国之间存在显著差异,很可能使澳大利亚的例子不适用于美国:

Very soon, the current recovery is bound to become the longest in U.S. history. However, I believe the odds are that it’s closer to the end than the beginning. (We never know for sure what’s going to happen in the future. At best we can think in terms of the probabilities. That’s the thinking behind my latest book’s subtitle: Getting the Odds on Your Side.) The recovery is likely to go on longer, but perhaps not much longer. Still, I wouldn’t place a wager on when it will end. About a year and a half ago, following the enactment of President Trump’s stimulative tax cuts, people started to ask me whether the U.S. might emulate Australia, whose last recession was in 1990. While not quite the same as asking “might there never be another recession?” the idea of 28 years between recessions would represent a radical difference this time. My answer to the above question is “probably not,” since there are significant differences between the two countries that probably render Australia’s example inapplicable to the U.S.:   

澳大利亚 GDP 中很大一部分来自铁矿石和煤炭等自然资源的出口,这些资源储量极为丰富。因此,近几十年来,它搭上了北方那个大得多的邻居——中国的强劲增长顺风车。

此外,“……拥有一个保守、聚焦国内、高度集中的银行体系,意味着澳大利亚在危机来袭时不会被迫输入其他国家的金融传染。”(《纽约时报》,2019 年 4 月 7 日)

事实上,我在澳大利亚看到一种保守和纪律,能够在延长金融繁荣的同时不制造过度膨胀。我最喜欢的例子是澳大利亚未来基金,政府于 2006 年设立该基金以应对国家养老金负债,资金来源是财政盈余(!)和电信公司 Telstra(前国有电信公司)的私有化。该基金资产目前达 1540 亿澳元,基本上被锁进了保险箱,直到 2020 年才可动用,现在看来很可能延长到至少 2026 年。美国政客有多大可能会(a)预先为政府养老金义务提供资金,而不是采取现收现付的方式,并且(b)20 年不动用这些资产,而不是拿它们去支付讨好选民的开支增长或减税?

A much bigger part of Australia’s GDP is based on exporting natural resources such as iron ore and coal, of which it has so much. Thus in recent decades it has drafted off the unusually strong growth of its much larger neighbor to the north, China. In addition, “. . . having a conservative, domestically focused, highly concentrated banking system meant that Australia wasn’t stuck importing other countries’ financial contagions when crises hit.” (The New York Times, April 7, 2019) In fact, I see in Australia a conservatism and discipline capable of extending financial good times without creating excesses. My favorite example is the Australia Future Fund, which the government formed in 2006 to deal with the country’s pension liabilities, with funding that came from fiscal surpluses (!) and the privatization of Telstra, the formerly state-owned telecommunications company. The fund’s assets, now standing at A$154 billion, were essentially put into a lockbox until 2020, which now appears likely to extend until at least 2026. What’s the likelihood that U.S. politicians would (a) fund government pension obligations up front, rather than deal with them on a pay-as-you-go basis, and (b) keep their hands off the assets for 20 years, rather than use them to pay for constituent-pleasing spending increases or tax cuts?

所以不,我不认为美国即将复制澳大利亚那种长达 28 年且仍在持续的经济复苏。这一点我敢打赌。

量化宽松带来的永久繁荣——在全球金融危机之后,美联储实施了量化宽松,即在公开市场购买债券的计划。美联储购买债券的效果是:(a)向金融体系注入银行准备金,(b)增强债券需求,从而压低长期利率(长期利率不受美联储与短期利率相关的常规公开市场操作影响),以及(c)随着优质债券的预期回报下降,重新点燃投资者追逐更高收益的风险偏好,从而促使信贷窗口重新打开。量化宽松在美国取得了成功,经济得以复苏。因此,现在有人提议美联储可以永远实施量化宽松,并会带来类似的积极结果。

首先,我认为量化宽松的部分影响可能来自心理层面。换句话说,量化宽松之所以能刺激经济,部分原因在于人们接受了量化宽松具有刺激作用。如果美联储采取完全相同的行动,但不对外宣布,效果会一样吗?(我相信存在

So no, I don’t think the U.S. is about to emulate Australia’s 28-years-and-counting recovery. That I will bet on. Perpetual prosperity from quantitative easing – In the aftermath of the Global Financial Crisis, the Fed engaged in quantitative easing, a program of purchasing bonds in the open market. The effect of the Fed’s purchases was to (a) inject bank reserves into the financial system, (b) strengthen the demand for bonds, thereby bringing down long-term interest rates (which are unaffected by the Fed’s normal open market operations related to short-term rates), and (c) with prospective returns on highquality bonds brought down, reignite risk-bearing on the part of investors seeking higher returns, thereby causing the credit window to reopen. QE was a success in the U.S., and the economy recovered. Thus some people are now proposing that the Fed could engage in QE forever, with similarly positive results. First, I think some part of the impact of QE may be psychological. In other words, QE stimulates the economy in part because people accept that QE is stimulative. If the Fed took exactly the same actions but did so without making an announcement, would the effect be the same? (I believe there’s

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美联储许多策略中带有一种自我应验、类似安慰剂效应的成分。就这一点而言,我认为其第一轮量化宽松比第二轮更有效,第二轮又比第三轮更有效。因此,随着心理效应减弱,永久性量化宽松的边际效果可能递减。

而且,谁又真能说清楚量化宽松是怎么起作用的?上周我参加了一场会议,有位与会者提出,在现代货币理论(详见下文)下,财政部可以发行潜在无限量的债务,如果第三方买家不接盘,美联储就能通过量化宽松买下这些债券。这听起来合理吗?如果美联储给银行记入准备金,银行再按准备金的倍数放贷,借款人用贷款去消费或投资,这个过程到底是在向经济真正注入资金,还是大多只是账面上的操作?抑或两者其实是一回事?当然,这个问题对所有拥有法定货币的国家都适用。

人们普遍认为,量化宽松导致了过去十年预期投资回报低迷、随之而来的冒险行为、资产通胀和贫富分化加剧。就像任何其他药方一样,我们难道不该担心这类副作用吗?

政府行动能否永久性地抬高经济中的需求水平,还是说它们大多只是把未来的需求提前挪到了现在?如果是后者,量化宽松能否让 GDP 永远高于原本的水平?我表示怀疑。但假如真能做到,那最终会不会引发我所说的“过剩”,进而导致衰退?

最后,当我听到人们谈论美联储有可能阻止衰退时,我不禁怀疑,它是否真有这个目标都是个问题。照上面说的,衰退到底是真能避免,还是只能推迟?如果是后者,是让它们自然发生好,还是人为推迟更好?人为推迟的努力,会不会让人们过度迷信美联储的能力和意图,从而再度滋生道德风险?而且,如果美联储接连化解了一连串小衰退,那会不会只是意味着,等它力有不逮之时,最终到来的那场衰退会格外猛烈?

良性联邦赤字——这些年来,政府里一些人追求联邦预算平衡,或者至少嘴上挂着这个说法。民主党一般被描述为想要“增税加开支”,以给民众做更多事。但他们有时是先花钱后征税。共和党则把自己定位成财政纪律的政党。他们的官方立场常常是:没有相应的资金来源增加,就不能增加开支。

不管争论如何,如今的联邦预算很少按时提交,也很少保持平衡。过去 50 年里,我们有 46 年出现赤字(只有 1998 年至 2001 年例外),而且近年来尽管经济繁荣,赤字占 GDP 的比重仍在上升。很多时候,甚至连装装样子对抗赤字的心思都没有。民主党即便找不到资金来源,也有大把花钱的宏图。共和党则减税,但未必减少开支。

如今两党似乎都觉得,赢得选举的办法就是干脆无视赤字。上世纪 30 年代,约翰·梅纳德·凯恩斯说过,当私人经济活动产生的需求不足以实现充分就业时,政府就应该支出大于收入。

a self-fulfilling, placebo-like component to many of the Fed’s tactics.) In this regard, I think its first round of QE was more effective than its second, and its second round was more effective than its third. Accordingly, there could be a diminishing return from permanent QE, as the psychological effect abates. And who knows exactly how QE works? Last week, at a conference I attended, a participant suggested that under Modern Monetary Theory (see more below), the Treasury could issue a potentially unlimited amount of debt, and if third-party buyers failed to take it up, the Fed could buy it under QE. Does this seem reasonable? If the Fed credits banks with reserves, the banks lend a multiple of those reserves, and the borrowers use the loan proceeds to make purchases or investments, does the process really inject money into the economy, or is it mostly a matter of bookkeeping? Or are they one and the same? Of course, this question is relevant to all nations with fiat currencies. Quantitative easing is generally considered to have contributed to the past decade’s low prospective investment returns, resultant risk-taking, asset inflation, and increasing wealth divide. As with any other prescription, shouldn’t we worry about possible side effects like these? Can government actions permanently raise the level of demand in an economy, or do they mostly accelerate future demand into the present? If the latter, can QE elevate GDP forever above what it otherwise would have been? I doubt it. But if it could, wouldn’t that eventually cause what I call an “excess,” leading to a recession? Finally, when I hear people talk about the possibility that the Fed will prevent a recession, I wonder whether it’s even desirable for it to have that goal. Per the above, are recessions really avoidable or merely postponable? And if the latter, is it better for them to occur naturally or be postponed unnaturally? Might efforts to postpone them create undue faith in the power and intentions of the Fed, and thus a return of moral hazard? And if the Fed wards off a series of little recessions, mightn’t that just mean that, when the ability to keep doing so reaches its limit, the one that finally arrives will be a doozy? Benign federal deficits – Over the years, some in government have pursued balanced federal budgets, or at least have paid them lip service. Democrats have generally been described as wanting to “tax and spend” in order to do more for citizens. But they’ve sometimes spent before they’ve taxed. Republicans, on the other hand, have positioned themselves as the party of fiscal restraint. It’s often been their official position that there could be no increases in spending if not accompanied by corresponding increases in funding. Regardless of the debate, federal budgets are rarely tendered on time or in balance these days. We’ve had deficits in 46 of the last 50 years (with the exception of 1998-2001), and in recent years they’ve risen as a percentage of GDP despite the prosperity we’ve been enjoying. Often there isn’t even a pretense of interest in fighting deficits. Democrats have big spending ideas even in the absence of ways to fund them. And Republicans cut taxes but not always spending. Both parties now seem to feel that the way to win elections is to simply ignore deficits. In the 1930s, John Maynard Keynes said that in periods when private economic activity isn’t generating enough demand to create full employment, governments should spend more than they take in,

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指望赤字支出来刺激需求。而在随之而来的经济增长期,政府应当量入为出,用盈余偿还为弥补赤字而背负的债务。然而,2017 年底,在经济复苏的第九个年头,共和党人却背离了这一原则,推行了大规模的减税政策,足以让赤字急剧膨胀。

这一领域的一个新理论正备受瞩目:现代货币理论(“MMT”)。其核心观点之一认为,当前政府赤字规模过小,而且无论如何,赤字并非坏事:

石溪大学经济学家、最具影响力的现代货币理论家之一史蒂芬妮·凯尔顿认为,税收收入并非政府支出的资金来源。在一个发行主权货币的国家,实际发生的情况是,政府先决定要花多少钱。在美国,国会先通过预算。然后政府机构开始向公众发放美元,用于购买坦克、推土机并支付薪资。之后,政府再以税收形式收回一部分资金。如果政府收回的少于发放的,就会出现赤字……

凯尔顿女士指出,政府每花出一美元,就转化为某个人的一美元收入。因此,公共部门的赤字同时会在政府之外产生盈余……(《纽约时报》,2019 年 4 月 7 日)

因此,按照 MMT 的说法,赤字是无害的——并非挥霍无度的标志——只是表明政府投入经济的货币多于其通过税收收回的。MMT 之所以现代,在于它超越了平衡收支的陈旧观念,为更大的赤字打开了大门。

凯尔顿女士是否认为赤字无关紧要?不,《纽约时报》的文章继续写道:

她说,赤字当然重要……赤字可能过大,尤其是当它们没有被用于提高国家生产能力,或者当劳动力、原材料和工厂出现短缺时。

在此,我们应当注意,凯尔顿女士在 2016 年曾担任伯尼·桑德斯的经济顾问。因此,我们有理由怀疑,MMT 在很大程度上是为政府发放更多免费福利、扩大赤字提供理论依据。有时候,经济观点与政治倾向确实难以截然分开。

这种对赤字的宽松看法让我想起一个假设的消费者,他持有一张没有信用额度上限的信用卡。他想花多少就花多少,不用担心还清欠款。理论上,这行得通(尽管很难弄清楚发卡机构图什么)。但至少,它没有为 unforeseen 的发展留出余地。我相信,与其他领域一样,经济运行的复杂性使得 MMT 这类永动机式的理论难以成为可靠的依赖。换句话说,现代货币理论仅仅是一种理论。万一它错了呢?

……当芝加哥大学布斯商学院就 [MMT 的] 几个主张询问顶尖学者时,28% 的人持反对意见,72% 的人强烈反对。(同上)

counting on deficit spending to stimulate demand. And then, during the resulting periods of growth, they should spend less than they take in, using the surplus to pay down the debt that was taken on to fund deficits. But departing from this, at the end of 2017, in the ninth year of a recovery, the Republicans enacted sweeping tax-rate cuts capable of ballooning the deficit. A new entrant in this area is receiving a lot of attention: Modern Monetary Theory (“MMT”). One of its components is the belief that government deficits currently are too small, and in any event not a bad thing: Tax revenues are not what finance the government’s expenditures, argues Stephanie Kelton, an economist at Stony Brook University and one of the most influential modern monetary theorists. What actually happens in a country that controls its own currency, she says, is that the government first decides what it’s going to spend. In the United States, Congress agrees on a budget. Then government agencies start handing out dollars to the public to pay for those tanks, earth movers and salaries. Afterward, it takes a portion back in the form of taxes. If the government takes back less than it gave out, there will be a deficit. . . . Ms. Kelton . . . points out that every dollar the government spends translates into a dollar of income for someone else. So a deficit in the public sector simultaneously produces a surplus outside the government. . . . (The New York Times, April 7, 2019) Thus, according to MMT, deficits are benign – not a sign of profligacy – and merely an indication that the government has put more money into the economy than it has taken out in taxes. MMT is modern in that it has moved past the old-fashioned concept of balancing spending and revenues, opening the door for bigger deficits. Does Ms. Kelton think deficits don’t matter? No, the Times article goes on: Of course they matter, she said. . . . They can be too big, especially if they are not used to increase the nation’s productive capacity, or if there is a shortage of labor, raw materials and factories. In this connection, we should note that Ms. Kelton served as an economic adviser to Bernie Sanders in 2016. Thus it may be reasonable to suspect that MMT is largely a rationale for governments to give away more free stuff, expanding their deficits. Sometimes it can be hard to separate economic opinions from political leanings. This relaxed view of deficits reminds me of a hypothetical consumer who has a credit card with no credit limit. He can spend whatever he wants without having to worry about paying off the balance. In theory, this could work (although it’s challenging to figure out what’s in it for the card issuer). But at a minimum it doesn’t allow for unforeseen developments. I believe here, as elsewhere, the workings of economics are too uncertain for a perpetual motion machine like MMT to be relied upon. In other words, Modern Monetary Theory is just that: a theory. What if it’s wrong? . . . when the University of Chicago’s Booth School of Business asked top scholars about a couple of [MMT’s] claims, they split between the 28 percent who disagreed and the 72 percent who strongly disagreed. (ibid.)

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关于国家债务的漠视——我记得年轻时有场激烈辩论,讨论国家是否应该永久负债。近年来,任何这类疑虑都被抛诸脑后,几乎所有国家都成了债务国。主要问题变成了债务水平是否可能过高。但现在,得益于现代货币理论(MMT),有人相信债务水平永远不嫌高。

继续引用《纽约时报》对现代货币理论的描述:

“国家债务不过是所有投入经济却未被税收收回、目前以国债形式储蓄的美元的历史记录,”凯尔顿女士说。

换句话说,国家债务只是政府所有成就的标志。

虽然我无法证明现代货币理论偏离正轨,但我也看不出把它奉为国家经济法则的合理性。它有弱点吗?我想上文那长段引述中间可能藏着一个,关于“一个控制自己货币的国家”。我不完全清楚凯尔顿女士用这个短语指的是什么,但也许指的是一个能随心所欲印钞而不必担心货币贬值、因此总能无限制发行和再融资债务的国家。

如今,美元是全球储备货币,而且没有明显的替代候选者。此外,美国因其债务是任何主要主权国家中最安全的,享有无尽的债务需求。因此,扩大国家债务不是问题。而像上述持卡人一样,既然信用没有上限,美国就能把未偿余额累积的利息也加上去。

如果这些条件变了会发生什么?会不会到达一个临界点,债务多到人们质疑美国的信誉和偿还借款的能力?那种情况下,要求的利率会上升,意味着债务和利息可能无法偿还,除非大规模印钞,导致美元贬值。那么,会不会有一天,偿清以贬值美元计价的美国债务需要多得不可接受的购买力?

我把这些问题抛给我的朋友兰迪·克罗兹纳,他是美联储理事会前成员、芝加哥大学布斯商学院副院长。他的回答如下:

我认为日本过去三十年和美国过去十年已经表明(并且继续在表明),拥有可信机构的国家可以“逃脱”比大多数人曾经想象的更高的债务水平,而不会遭到债券卫士的袭击。话虽如此,这使国家易受情绪转变的影响,正如你描述的那样。“逃脱惩罚”太久会随时间侵蚀机构的可信度。

再说一次,现代货币理论也许行得通,大幅扩张的国债也许被证明可行甚至有利。但我可不会把全部家当押在这上面。

Disregarded national debt – I recall a heated debate when I was young over whether it’s okay for nations to permanently be in debt. More recently, any such doubt has been forgotten, and almost all nations are debtors. The main issue became whether there can be a level of debt that’s too high. But now, thanks to MMT, there’s a belief that there’s no such thing. Continuing from the Times’s description of Modern Monetary Theory: “The national debt is nothing more than a historical record of all of the dollars that were spent into the economy and not taxed back, and are currently being saved in the form of Treasury securities,” Ms. Kelton said. In other words, national debt is just a sign of all the government has accomplished. While I can’t prove that Modern Monetary Theory is off the beam, I also can’t see making it the economic law of the land. Does it have a weakness? I think there may be one hidden in the middle of the long quote above, regarding “a country that controls its own currency.” I don’t know exactly what Ms. Kelton meant by this phrase, but it might be a reference to a country that can print as much money as it wants without having to worry about its currency depreciating, and thus one that is always able to issue and refinance debt without limits. Today the U.S. dollar is the world’s reserve currency, and there aren’t any obvious candidates to replace it. Further, the U.S. benefits from an unlimited appetite for its debt, since it’s the safest of any major sovereign. For these reasons, expanding the national debt isn’t a problem. And like the cardholder described above, since there’s no limit to its credit, the U.S. can add the interest that accrues to the unpaid balance. What happens if these conditions change? Could a tipping point be reached at which there’s so much debt that people question the U.S.’s creditworthiness and ability to repay its borrowings? In that case, the demanded interest rate would rise, meaning the debt and interest mightn’t be repayable without massive money printing that would result in debasement of the dollar. Thus, could there come a day when it takes unacceptably more purchasing power to pay off U.S. debt denominated in dollars that have depreciated? I put these questions to my friend Randy Kroszner, former member of the Fed’s Board of Governors and Deputy Dean at the University of Chicago’s Booth School of Business. Here’s his response: I think the last three decades for Japan and the last decade for the U.S. have shown (and continue to be showing) that countries with credible institutions can “get away with” higher debt levels without a raid by bond vigilantes than most had once thought. That said, it leaves the country vulnerable to a change in sentiment, exactly as you describe. “Getting away with it” for too long erodes the credibility of the institutions over time. Again, MMT might work, and vastly expanded national debt might prove viable or even advantageous. But I wouldn’t bet the ranch on it.

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没有通胀的经济增长——过去 60 年,所谓的菲利普斯曲线被广泛(尽管并非普遍)接受,它假定失业率与通胀率之间存在反向关系。换句话说,随着失业率下降、劳动力市场趋紧,工人谈判筹码增强,雇主不得不争抢日益减少的可用工人。这导致工资上升,进而转化为通胀加剧。美国在特朗普总统任期内失业率异常低,如今已处于 50 年低位。尽管如此,直到最近工资通胀才有所显现,而且整体通胀水平依然不高。上述菲利普斯曲线所依据的关系之所以可能与过去不同,有以下原因:

Economic strength without inflation – For the last 60 years, there has been widespread (albeit not universal) acceptance of the so-called Phillips curve, which posits an inverse relationship between the rate of unemployment and the rate of inflation. In other words, as unemployment falls and the labor market tightens, workers gain bargaining power and employers have to compete for a declining number of available workers. This results in rising wages, which translates into increasing inflation. The U.S. has seen unusually little unemployment during the Trump presidency, and today it’s at a 50-year low. Nevertheless, there hasn’t been much wage inflation until very recently, and there still isn’t much general inflation. There are reasons why the relationship underlying the Phillips curve as defined above might be different from what it was in the past: 

由于美国劳动力参与率(成年人中就业或正在找工作的人口比例)处于 40 多年来的最低水平,或许更有意义的是关注非就业率(成年人中未工作的人口比例),而不是失业率(正在找工作但未就业的成年人比例)。按前一项指标衡量,劳动力市场并不那么紧张。

通胀在当下和未来可能在结构上低于过去,从而改变其与劳动力市场状况的关系。自动化、制造业向低成本国家的转移,以及数字时代免费或廉价商品的普及,可能有助于解释如今异常低的通胀率。至于第三类因素的例子,不妨想想照片、电话通话、短信(文本和电子邮件对比电报和传真)以及书籍近年来的价格趋势。

另一方面,上述这类商品降价的趋势可能会停止,通胀与失业之间更为传统的关系可能会重新出现。

Since the U.S. labor force participation rate (percentage of adults who are either employed or looking for work) is at its lowest level in more than 40 years, it might be more meaningful to look at the non-employment rate (the percentage of adults who aren’t working) rather than the unemployment rate (the percentage of adults looking for work who aren’t working). By the former measure, the labor market isn’t so tight. Inflation might be structurally lower now and in the future than it was in the past, altering its relationship to conditions in the labor market. Automation, the shift of manufacturing to lowcost countries and the prevalence of free/cheap stuff in the digital age might help explain today’s unusually low rate of inflation. For examples of the third of these, think about recent trends in the price of photographs, cellphone calls, messages (texts and emails versus telegrams and faxes) and books. On the other hand, the cheapening of things like those listed just above could halt, and a more traditional relationship between inflation and unemployment could resume.

过度的通胀会引发一系列严重的经济和社会问题,通常迫使中央银行提高利率来降温,而这会抑制经济增长和就业创造。同样,通胀上升可能促使投资者要求更高的债券和贷款利率,以补偿购买力缩水的风险。这可能加大借款人偿还债务的难度,导致违约率上升,并打击投资者承担风险和提供融资的意愿。(另一方面,也存在一个合意的通胀水平,在这种水平下,工人能享受到工资增长,美国也能用购买力降低的美元偿还未偿债务。今天这个合意水平大约是 2%,尽管失业率低落,政策制定者仍担忧这个目标未能实现。)通胀抬头可被视为经济复苏终结的潜在推手。到目前为止,尽管劳动力市场紧俏,通胀却尚未显现。菲利普斯曲线关系是彻底失效了,还是通胀正在酝酿之中?谁知道呢?

我用来形容通胀的词是“神秘”。通胀如何起步,鲜有清晰答案;在 20 世纪 70 年代和 80 年代初,当美国通胀率达到十几甚至二十几的水平时,直到保罗·沃尔克出任美联储主席之后,才有人找到遏制的办法。今天为什么通胀如此之低,未来是否会有通胀,这都令人费解。但我并不确信几年后通胀率仍能维持在 2% 以下。

Excessive inflation creates a number of serious economic and social problems, typically requiring central banks to raise interest rates to cool it off, with the effect of dampening economic growth and job creation. Likewise, rising inflation can cause investors to demand higher interest rates on bonds and loans to compensate for the risk of losing purchasing power. This can make it harder for borrowers to service their debt, causing defaults to rise and discouraging investors from taking risk and providing financing. (On the other hand, there’s a level of inflation that’s desired such that, among other things, workers will see wage growth, and the U.S. can repay outstanding debt with dollars representing a reduced amount of purchasing power. Today that desired rate is about 2%, and policymakers worry about the fact that it hasn’t materialized despite the low unemployment rate.) Rising inflation could be seen as a potential contributor to the end of the recovery. So far it hasn’t shown up despite the tightness of the labor market. Has the Phillips curve relationship been revoked for good, or is inflation in the offing? Who knows? The word I use to describe inflation is “mysterious.” It’s rarely clear how it gets started, and in the 1970s and early ’80s, when it reached the mid-teens in the U.S., no one could figure out how to stop it until after Paul Volcker became Fed chair. It’s mysterious why there’s so little inflation today, and whether there’ll be inflation in the future. But I’m not confident that it’ll still be below 2% a few years from now.

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长期低利率——“更长时间维持低利率”是多头市场的又一集结号。如果利率保持低位,经济增长受到鼓舞,违约稀缺,冒险热情受鼓励,融资变得容易。迄今为止,尽管形势不利,美国经济的强劲并未导致利率上升。美联储自 2015 年底以来九次加息,将短期联邦基金利率从近乎零的水平提升到 2.25%-2.5%,并在 2018 年底表示会继续上调。但 1 月份,因应 2018 年第四季度浮现的经济疲弱担忧,美联储掉转方向,宣称目前暂不再加息。而去年 10 月初 10 年期美国国债收益率触及 3.25% 时,恰逢股市第四季度低迷的开始(可能也是诱因),如今低利率的承诺则在今年的反弹中扮演了重要角色。2007 年年中,在我感觉与现在颇为相似的真实经济环境中,联邦基金利率和 10 年期国债收益率都在 5.25% 左右。今天,联邦基金利率和 10 年期国债收益率却低于 2.5%,美联储称利率为“中性”:既低到不足以刺激经济,又高到不至于限制增长。(我当年认为 2007 年的利率属于中性——两种水平怎么可能都对?)美联储会维持低利率吗?如果通胀加剧,它还能这样做吗?它会将利率保持在如此低位,以至于未来若需刺激经济时几乎没有下调空间吗?如果赤字和债务增速超过 GDP 的增长,难道不会给利率带来上行压力吗?或者,如果美联储如许多人现在预期那样降息,市场是会因刺激措施而振奋,还是会因降息所针对的经济担忧而下跌?当然,没人能说清楚。对收益率曲线倒挂的淡定——过去两年里我们听说了很多关于收益率曲线倒挂风险大的言论。收益率曲线通常呈向上倾斜状,意味着贷方在长期放贷时要求更高的利率,以补偿不确定性增加(尤其是贷款发放到偿还期间货币购买力可能下降的问题)。但有时,长期利率跌破短期利率,曲线就称为“倒挂”。近几个月,曲线异常平缓,如今实际上已倒挂。由于多数倒挂时期与经济衰退相关,这一状况被视为令人担忧。在这方面,《金融时报》6 月 1 日指出,“[收益率曲线] 在过去 50 年里每次美国经济衰退前都出现‘倒挂’。”(但请注意,这与说每次倒挂后都出现衰退不同。)人们应关注的并不是倒挂与衰退通常会巧合出现,而是这次倒挂的特殊原因。理解后者或许能让观察者判断是否预示着衰退,并避免“假阳性”。倒挂的原因并非总是一目了然,因为利率(如同通胀)可能难以捉摸。今天,我认为曲线倒挂可能是因为美联储在同时推高短期利率,而(a)收益率曲线长端存在大量投资资本盈余,对那里的利率形成下行压力,以及(b)对长期借贷的依赖减少。

Persistently low interest rates – “Lower for longer” has been another rallying cry of the bull market. If interest rates remain low, economic growth is encouraged, defaults are scarce, risk-taking is encouraged and financing is easy. So far – against the odds – the strength of the U.S. economy hasn’t caused interest rates to rise. The Fed has raised interest rates nine times since the end of 2015, taking the short-term fed funds rate from roughly zero to 2¼-2½%, and in late 2018 it said it would go further. But in January, in response to fears of economic weakness that arose in 4Q2018, the Fed reversed course and declared that there would be no more increases for now. Whereas the yield on the 10-year Treasury note hitting 3¼% early last October coincided with (and probably contributed to) the start of the stock market’s fourth-quarter swoon, the promise of low rates has played a big part in the rally this year. In mid-2007, in a real economy that felt to me a lot like this one, the fed funds rate and the yield on the 10-year Treasury note both were around 5¼%. Today, with the fed funds rate and 10-year Treasury yield below 2½% instead, the Fed describes interest rates as “neutral”: neither low enough to be stimulative nor high enough to be restrictive. (I considered the 2007 rates to be neutral – how can that be true of rates at both levels?) Will the Fed leave rates low? Can it do so if inflation strengthens? Will it leave rates so low that there’s little room to reduce them in the future should stimulus be needed? If deficits and debt grow faster than GDP, won’t that put upward pressure on interest rates? Or if the Fed cuts rates, as many people now consider likely, will the markets be cheered by the stimulus, or will they fall in response to the economic concerns at which the rate cuts are directed? Certainly no one can say. Equanimity regarding the inverted yield curve – Something else we’ve heard a lot about over the last couple of years is how risky it is when the yield curve inverts. The yield curve is usually upward-sloping, meaning lenders demand higher interest rates when they lend for longer periods as compensation for the increased uncertainty (especially with regard to possible declines in the purchasing power of the currency between the time the loan is made and when it’s repaid). But sometimes, long-term rates fall below short-term rates, and the curve is said to be “inverted.” The curve has been unusually flat in recent months, and today it’s actually inverted. Because most periods of inversion have been associated with recessions, the condition is considered worrisome. In that regard, the Financial Times noted on June 1 that “the [yield curve] has ‘inverted’ before every US recession in 50 years.” (Note, however, that this is different from saying every inversion has been followed by a recession.) What people should be focusing on isn’t the usual coincidence of inversions and recessions, but rather the reason for this particular inversion. Understanding the latter might allow observers to sense whether a recession is implied and avoid a “false positive.” The explanation for inversions isn’t always clear, since interest rates (like inflation) can be mysterious. Today I would say the inversion of the curve may be due to the fact that the Fed has brought short rates up at the same time that (a) there’s a surplus of capital for investment at the long end of the yield curve, putting downward pressure on rates there, and (b) there’s less reliance on

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信息时代的资本投资,所以对长期债务资本的需求减少。另一个可能压低长期收益率的原因是投资者普遍担忧情绪上升,从而转向美债寻求安全。当债券需求上升时,卖方能够要求买方支付更高的价格,这转化为更低的收益率。

我不完全理解为什么收益率曲线倒挂应该是负面信号,但它的信奉者坚称确实如此。我无法证明事实并非如此。一个可能的影响是对银行盈利能力的威胁:收益率曲线倒挂剥夺了银行仅仅通过借短贷长赚钱的能力。

无盈利的成功——历史上,公司被认为有价值主要是因为它们产生利润——如果不是立即,至少预期在可预见的未来会如此。然后在 1990 年代末的科技媒体电信泡沫中出现了这样一种观点:即使未来多年没有利润,公司也可以是伟大的(且有价值的)。今天,无利润公司重新流行起来,有时估值高达数百亿美元。

科技和风险投资者在过去十年里赚了很多钱。因此,人们对科技公司(包括像 Uber 和 Lyft 这样应用科技来催生新商业模式的公司)有着浓厚的兴趣,并愿意为多年后可能的利润今天支付高价。这没有什么错,只要这种可能性是真实的,没有被高估,也没有被过度定价。对我来说,问题在于,在一个无盈利状态不妨碍投资者喜爱的时期——当预计科技公司多年后才能实现的盈利能力被估价得与更平凡公司的当前利润一样高,甚至更高时——投资这些公司可能是一个大错误。

今天有很多投资者没有经历过 2000 年 TMT 泡沫的破裂,在那次泡沫中,大量互联网和电子商务公司被给予了怀疑的好处,结果却一文不值。风险投资基金在 1990 年代末显示出三位数的年回报率,但大约 2000 年开始的那些表现非常糟糕(人们开始问我风险投资是否是一个合法的资产类别)。

今天,一些科技和风险投资再次产生了巨大成果,怀疑似乎消失了。然而,在投资中,真相通常介于无限价值与一文不值两个极端之间。如今投资者情绪似乎更接近钟摆弧线的积极一端,但不太可能永远停留在那里。

增长投资的永久卓越——既然面向未来的“增长投资”已经如此长久地成功,并且如此严重地击败了“价值投资”,人们问我这是否会结束。特别是,价值投资被比作不受欢迎的“烟蒂股”投资学派,即人们不管资产质量如何,只因为价格低就买入。价值投资的批评者认为,由于通常与增长股相关的技术领先地位在今天的世界中对于成功至关重要,缺乏这种领先地位的传统经济公司未来不太可能成为顶尖表现者。

我的回答很简单:低价格与好价值截然不同,那些把低价置于一切之上的人很容易陷入“价值陷阱”。而且,传统经济公司确实在过往表现优异,但未来是否如此,则是另一回事。

capital investment in the information age, so less demand for long-term debt capital. One more thing that may be bringing down long-term yields is an increase in general worry among investors, and thus a flight to the safety of Treasurys. When demand for bonds rises, sellers are able to require buyers to pay higher prices, which translate into lower yields. I don’t fully understand why an inverted yield curve should be a negative, but its fans swear that it is. I merely can’t prove that it’s not. One possible ramification is the threat to bank profitability: an inverted yield curve takes away banks’ ability to make money simply by borrowing short to lend long. Profitless success – Historically, companies have been considered valuable primarily because they produce profits – if not immediately, then at least they were expected to do so in the foreseeable future. Then the view arose in the tech-media-telecom bubble of the late 1990s that companies could be great (and valuable) even in the absence of profits for years to come. Today, profitless companies are back in vogue and sometimes valued in the tens of billions of dollars. Tech and venture investors have made a lot of money over the last ten years. Thus there’s great interest in tech companies (including ones like Uber and Lyft that are applying technology to enable new business models) and willingness to pay high prices today for the possibility of profits far down the road. There’s nothing wrong with this, as long as the possibility is real, not over-rated and not over-priced. The issue for me is that in a period when profitless-ness isn’t an impediment to investor affection – when projected tech-company profitability commencing years from now is valued as highly as, or higher than, the current profits of more mundane firms – investing in these companies can be a big mistake. Today there are a lot of investors who weren’t around to see the 2000 bursting of the TMT bubble, in which large numbers of Internet and e-commerce companies were given the benefit of the doubt, only to end up worthless. Venture capital funds showed triple-digit annual returns in the late 1990s, but the ones started around 2000 performed very poorly (and people began to ask me if venture capital was a legitimate asset class). Today, some tech and venture investments have again produced great results, and the doubts seem to be gone. In investing, however, the truth usually lies somewhere between the extremes of infinite value and worthlessness. Investor sentiment seems to be closer to the positive end of the pendulum’s arc these days, but it’s unlikely to stay there in perpetuity. Growth investing preeminence forever – Since future-oriented “growth investing” has been so successful for so long, and has so seriously trounced “value investing,” people are asking me whether this will ever end. In particular, value investing is being likened to the out-of-favor “cigar-butt” school of investing, in which people buy assets regardless of their quality just because they’re lowpriced. Critics of value investing argue that, since the technological leadership that’s often associated with growth stocks is so essential for success in today’s world, old-economy companies lacking it are unlikely to be top performers in the future. My answer is simple: low price is very different from good value, and those who pursue low price above all else can easily fall into “value traps.” And certainly it’s true that old-economy companies

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它们未来更不可能成为高速成长股,也不太可能从过去保护它们的“护城河”中获益太多。

同样可能的是,鉴于如今搜索证券市场的便利性,要找到当前资产或盈利能力被广泛忽视、因而被低估的“价值”公司,可能比过去更难。由于最佳回报来自买入那些优点尚未被他人察觉的东西,所以数据获取的便捷和普及,确实可能让价值投资者更难脱颖而出。

另一方面,那些拥有更先进技术、更光明盈利前景、有能力颠覆他人而非被颠覆的公司,其价值也并非无限。因此,它们有可能被高估并成为危险的投资,即使它们在业务上取得成功(1968—1973 年的“漂亮五十”就常常如此)。我依然相信,最终,在当代赢家被追捧(并被哄抬)至过高的价格之后,会出现这样一个时期:那些缺乏同等优势的公司会相对便宜到足以成为更佳的投资选择(参见 2000—2002 年价值股与成长股的表现对比)。

可以理解的是,前景光明的公司的股票,在经济繁荣、市场乐观的时期,往往表现更佳,因为投资者乐于为潜力支付溢价。但眼下拥有切实价值的公司的股票,在不太乐观的时期更可能稳住阵脚,原因有二:(一)它们此前遭到忽视、估值偏低;(二)支撑其价格的理由,更多基于事实而非猜测和信仰。因此,价值风格的回归,可能要等到“冠军”们的光环有所褪色、或许是市场回调时才会到来(参见 2018 年四季度)。但这一天终将到来。

are less likely to be the fast growers of the future or benefit as much from the “moats” that protected them in the past. It may also be true that given the ease today of searching the universe of securities, it may be harder than it used to be to find “value” companies with current assets or earning power that are broadly unrecognized and thus underpriced. Since the best returns come from buying things whose merits others aren’t aware of, it’s certainly possible that easy, widespread access to data is making it harder for value investors to excel. On the other hand, companies that do have better technology, better earnings prospects and the ability to be disrupters rather than disrupted still aren’t worth infinity. Thus it’s possible for them to become overpriced and dangerous as investments, even as they succeed as businesses (this was often the case with the Nifty-Fifty in 1968-73). And I continue to believe that eventually, after the modern winners have been lauded (and bid up) to excess, there will come a time when companies lacking the same advantages will be so relatively cheap that they can represent better investments (see value versus growth in 2000-02). Understandably, the stocks of companies with bright futures are likely to be outperformers in times of economic growth and optimism, when investors are happy to pay up for potential. But stocks of companies with tangible value in the here-and-now are likely to hold up better in less positive times because (a) they’ve previously been disrespected and valued lower and (b) the rationale underlying their prices is less a matter of conjecture and faith. Thus a swing in favor of value may have to await a period in which the “champions” lose some of their luster, perhaps in a market correction (see 4Q2018). But it’ll come.

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上面提出的这些理论有什么共同之处?答案很简单:它们都乐观。每一种理论都在解释,为什么未来应当一切向好,而过去并非总是如此。

近年来,美国同时经历了经济增长、低通胀、赤字与债务扩大、低利率以及金融市场上涨。必须认识到,这些东西本质上互不相容。它们历史上很少同时出现,未来假设它们会如此也不明智。

上面讨论的许多观点,暗示我们正处于所谓的“金发姑娘”环境:既不太热,也不太冷。

What do all the theories propounded above have in common? That’s easy: they’re optimistic. Each one provides an explanation of why things should go well in the future, in ways that didn’t always go well in the past. In recent years, the U.S. has simultaneously experienced economic growth, low inflation, expanding deficits and debt, low interest rates and rising financial markets. It’s important to recognize that these things are essentially incompatible. They generally haven’t co-existed historically, and it’s not prudent to assume they will do so in the future. Many of the beliefs discussed above suggest we’re in a so-called “Goldilocks” environment: one that’s not too hot and not too cold.  

经济增长不会强劲到引发过度通胀,也不会疲弱到陷入衰退。

通胀不会低到令经济停滞,也不会高到导致生活成本沉重上升、需要用紧缩性加息来降温。

Economic growth won’t be so strong that it brings on excessively high inflation, or so weak that it ends in recession. Inflation won’t be so low that the economy stagnates, or so high that it leads to burdensome increases in the cost of living and requires contractionary interest-rate increases to cool it off.

过去我也见过,人们相信那种理想状态会永远延续,但结果从未如此。也许这次会不一样——在事情变糟之前,没人能证明它不会。

I’ve seen times in the past when people believed such an ideal state would continue in perpetuity, but it has never worked out that way. Maybe it will this time – no one can prove it won’t until it doesn’t

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——但这一论断若得到广泛认同,便足以说明当前投资环境中乐观情绪占据主导。

我们密切警惕“这次不一样”这种普遍信念,因为想知道市场是否正被看多情绪、乐观主义、风险偏好和低度怀疑所抬升。在其他条件相同的情况下,这些因素会导致资产价格相对于内在价值偏高,而它们的存在使我们面临风险——一旦这些情绪消退,资产价格也会随之回落。

我在《On the Couch》(2016 年 2 月)中曾写道:

> 这是疯狂之处之一:在现实世界中,事物通常在“相当不错”和“不太妙”之间波动。但在投资世界里,认知常常从“完美无瑕”摆动到“毫无希望”。钟摆从一端荡到另一端,几乎不在“中庸之道”上停留,也很少在合理区间内徘徊。

“这四个字”被广泛贴在看涨论点上,表明环境正被视作完美无瑕。一旦这种认知摆动到“毫无希望”的一端,投资者将承受痛苦。

当然,没有人能证明上述九项论断不会成立。经济和市场并不像物理科学那样受制于不可改变的定律,也没有示意图能展示它们如何运作。因此,我想照例明确说明,这些只是一个(a)并非经济学家、(b)不敢声称确切了解经济和货币机制如何运转之人的思考。但又有谁敢这么说呢?

当然,有时事情确实不一样,正如坦普尔顿所言。(而在科技和数字商业模式等领域,我敢打赌事情不同以往的概率会超过坦普尔顿所说的 20%。)当今世界无疑与过去大不相同。正如我此前所写,40 年前感觉世界是个稳定之地,只在科学进步、时尚潮流和政治等有限领域发生变化。今天,“世界不变”的想法早已被抛到九霄云外:一切每分钟都在变,跟不上变化的人注定被淘汰。技术实力可能成为成功的关键,任何缺乏这种实力的公司或行业,都容易被拥有者所颠覆。

我坦然承认,在我这个年纪,或许无法完全把握决定未来的力量。在这样的时刻——科技股正处于一波大行情之中——我想起了年轻时读过的经典之作《金钱游戏》(1967 年)。书中,笔名亚当·史密斯的作者介绍了大温菲尔德,一位资深经纪人,尽管已届中年、有其局限,却在新科技股中赚得盆满钵满。当被问及成功秘诀时,他向史密斯引见了他手下的交易员:

“我的孩子,”大温菲尔德在电话里说,“我们的麻烦在于,对这片市场来说太老了。这种市场里最顶尖的玩家,都还没过二十九岁生日。”

– but certainly broad acceptance of such a proposition indicates that optimism prevails in the current investment environment. We keep an eye out for the widespread belief that “this time it’s different” because we want to know if markets are being lifted by bullishness, optimism, risk tolerance and low levels of skepticism. Everything else being equal, these things result in asset prices that are high relative to intrinsic values, and their presence exposes us to the risk that they’ll abate, taking asset prices down with them. In On the Couch (February 2016) I said: That’s one of the crazy things: in the real world, things generally fluctuate between “pretty good” and “not so hot.” But in the world of investing, perception often swings from “flawless” to “hopeless.” The pendulum careens from one extreme to the other, spending almost no time at “the happy medium” and rather little in the range of reasonableness. Widespread attaching of “the four words” to bullish propositions suggests that the environment is being perceived as flawless. When and if that swings to hopeless, the result is pain for investors. Of course, no one can prove that the nine propositions discussed above won’t hold. Economics and markets aren’t governed by immutable laws like the physical sciences, and there’s no schematic diagram that shows how they work. Thus, I want as usual to make it explicit that these are the musings of someone who (a) isn’t an economist and (b) doesn’t claim to know exactly how economic and monetary mechanisms function. But who does? Now, sometimes things really are different, as Templeton said. (And in areas like technology and digital business models, I’d bet things will be different more than the 20% of the time Templeton cited.) Certainly the world today is very different from that of the past. As I’ve written before, 40 years ago it felt like the world was a stable place that was subject only to limited change in areas like scientific progress, fads and politics. Today the idea of an unchanging world is out the window: things change every minute, and anyone who doesn’t keep up with the changes is fated to miss out. Technological prowess can be essential for success, and every company or industry that lacks it is susceptible to being disrupted by those who possess it. I readily admit that, at my stage in life, I may not fully grasp the forces that will determine the future. At times like this, when tech stocks are in the middle of a great run, I’m reminded of a classic book from my youth, The Money Game (1967). In it, the pseudonymous Adam Smith introduced the Great Winfield, a veteran broker who, despite the limitations associated with having reached middle age, was minting money in the new tech stocks. When asked about the source of his success, he introduced Smith to his traders: “My boy,” said the Great Winfield over the phone, “Our trouble is that we are too old for this market. The best players in this kind of a market have not passed their twenty-ninth birthdays.”

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“……我对当前市场的解决办法,”伟大的温菲尔德说,“孩子。这是一个孩子的市场。这是比利小子、约翰尼小子和谢尔顿小子。”

“看到了吗?看到了吗?”伟大的温菲尔德说,“四季更替的流动!生命再次开始!这太美妙了!就像有了儿子一样!我的孩子们!我的孩子们!”

当然,作为老手,伟大的温菲尔德明白真相。于是他继续说道:

“……我的孩子们的优势在于,他们太年轻,记不得任何坏事,而且他们赚了这么多钱,觉得自己不可战胜,”伟大的温菲尔德说,“现在你我都知道,总有一天乐队的演奏会停下来,风会吹过破碎的窗棂……”

[强调为本文作者所加]

最后,我要回到一个我认为对任何想在投资上取得成功的人都不可或缺的概念——牛市的三阶段:

. . . “My solution to the current market,” the Great Winfield said. “Kids. This is a kids’ market. This is Billy the Kid, Johnny the Kid, and Sheldon the Kid.” . . . “See? See?” said the Great Winfield. “The flow of the seasons! Life begins again! It’s marvelous! It’s like having a son! My boys! My kids!” Of course, veteran that he was, the Great Winfield knew the truth. Thus he went on: . . . “The strength of my kids is that they are too young to remember anything bad, and they are making so much money they feel invincible,” said the Great Winfield. “Now you know and I know that one day the orchestra will stop playing and the wind will rattle through the broken window panes . . .” [Emphasis added] To close, I’ll return to a concept I consider indispensable for anyone hoping to succeed at investing – the three stages of a bull market:   

第一阶段,只有少数有远见的人开始相信情况会好转;第二阶段,大多数投资者意识到改善确实在进行;第三阶段,所有人都认定情况只会永远好下去。

the first, when only a few forward-looking people begin to believe things will get better, the second, when most investors realize improvement is actually underway, and the third, when everyone concludes that things can only get better forever.

显然,在最初阶段——当乐观情绪稀缺、资产价格因此低廉时——少数买入者能捡到大便宜。但那些在最后阶段——出于相信消息面永远向好而买入的人——则可能犯下大错。上述九条主张,全都是“事情只会永远更好”的变体。若这些就是当下指导投资者的理念,那可令人担忧。

最好的投资往往诞生于恐惧与绝望之中。而当投资者心甘情愿地用“这次不一样”这句话轻率地抹去历史的局限时,这种机会几乎不会出现。我想提醒这些投资者一句常被归于马克·吐温的名言:“历史不会重演,但会惊人地相似。”当然,投资者要紧跟当下及塑造未来的事态发展,这很重要。但同样关键的是,他们不能完全忘却过去的教训。

Clearly the few who buy in the first stage – when optimism is scarce and thus asset prices are low – can access great bargains. But those who buy in the last stage – out of a belief that the news will always be good – can be making a big mistake. The nine propositions reviewed above all represent variations on “things can only get better forever.” If they’re the ideas guiding investors today, that should be considered worrisome. The best investments often are made in times of fear and desperation. That’s rarely possible when investors are willing to blithely dismiss the limitations of the past with the words “this time it’s different.” I would remind those investors of a quote usually attributed to Mark Twain: “History doesn’t repeat itself, but it does rhyme.” Of course it’s important that investors keep up with current developments and those that will shape the future. But it’s also essential that they not completely unlearn the lessons of the past.

June 12, 2019

June 12, 2019

2019 年橡树资本管理有限合伙企业

2019 Oaktree Capital Management, L.P.

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