The game of investing would be rather simple if everything moved in a straight line and economic data points could be could be connected with a level ruler. Unfortunately, the real world doesn’t operate that way – data points are actually scattered continuously. In the short-run, inflation, GDP, exchange rates, interest rates, corporate earnings, profit margins, geopolitics, natural disasters, financial crises, and an infinite number of other factors are very difficult to predict with any accurate consistency. The true way to make money is to correctly identify long-term trends and then opportunistically take advantage of the chaos by using the power of mean reversion. Let me explain.

Take for example the just-released October employment figures, which on the surface showed a blowout creation of +271,000 new jobs during the month (and the unemployment rate decline to 5.0%) versus the Wall Street consensus forecast of +180,000 (flat unemployment rate of 5.1%). The rise in new workers was a marked acceleration from the +137,000 additions in September and the +136,000 in August. The better-than-expected jobs numbers, the highest monthly addition since late 2014, was paraded across television broadcasts and web headlines as a blowout number, which gives the Federal Reserve and Chairwoman Janet Yellen more ammunition to raise interest rates next month at the Federal Open Market Committee meeting. Investors are now factoring in roughly a 70% probability of a +0.25% interest rate hike next month compared to an approximately 30% chance of an increase a few weeks ago.

As is often the case, speculators, traders, and the media rely heavily on their trusty ruler to connect two data points to create a trend, and then subsequently extrapolate that trend out into infinity, whether the trend is moving upwards or downwards. I went back in time to explore the media’s infatuation with limitless extrapolation in my Back to the Future series (see Back to the Future; Part II; and Part III). More recently, weakening data in China caused traders to extrapolate that weakness into perpetuity and pushed Chinese stocks down in August by more than -20% and U.S. stocks down more than -10%, over the same timeframe.