The Career Is a Competency Weighing Machine.

There is a line from Warren Buffett that almost everyone in finance has heard in some form, and that most people never think about hard enough. He was quoting his mentor Benjamin Graham:

In the short run, the market is a voting machine. In the long run, it is a weighing machine.

The point Graham was making is about stock prices. In the short run, prices reflect sentiment — popularity, narrative, momentum, who is in the room cheering. In the long run, prices reflect earnings.

I've come to believe the same thing is true about careers. The version I like is a small extension of Graham's original:

In the short run, many factors can play a role in your career. In the long run, the workplace is a competency weighing machine.

Short-run career outcomes are noisy. They depend on timing, luck, which manager you happen to draw, whether your business unit got the investment round that year, whether you happened to be on a team that shipped something visible to the CEO. None of this is fair in the sense of being proportional to your capability. All of it is real, and all of it matters in the near term.

In the long run, very little of it matters. The long run weighs something else.

The machine is slow. It is not asleep.

Source: Benjamin Graham, as quoted by Warren Buffett; the short-run/long-run adaptation is a personal one, first written down in a slide deck called "Why" sometime in 2009, and still the best one-line summary I know of how careers actually work.