Hindsight And The Story Markets Tell Afterwards

Market history reads as a sequence of events that were clearly coming. That clarity is manufactured after the fact, and believing it distorts how future decisions are made.

Memory reorganises around the outcome

Once an outcome is known, people reliably misremember how confident they had been beforehand, shifting their recollection towards what actually happened.

The effect is not dishonesty. The brain incorporates the new information and rebuilds the earlier belief around it, leaving the revised version feeling like the original.

Applied to markets, this means investors genuinely remember having seen a downturn coming when their behaviour at the time indicates otherwise.

Narrative selects the signals that worked

Accounts written after a market event describe the warning signs, and those signs are real. What the account omits is the far larger number of similar signals that preceded nothing.

Selecting evidence by outcome makes any period look legible. The same method applied to a period where nothing happened would produce an equally coherent story.

This is why market history reads as a chain of causes while the present, which contains the same quantity of information, feels ambiguous.

The illusion inflates confidence in forecasts

If the past looks predictable, the future seems as though it should be too, and the failure to predict it becomes a personal shortcoming rather than a structural limit.

That belief supports demand for forecasts, and forecasts that turn out wrong are rarely remembered with the same clarity as those that happened to be right.

Keeping a written record of what was expected and why is one of the few reliable corrections, because it fixes the belief before the outcome can revise it.

Timing appears easier in retrospect

Looking back at a chart, the low point is visible and the recovery obvious. In real time that low was surrounded by conditions suggesting further decline.

The information available at the bottom of a fall is almost uniformly negative, which is part of why the price is where it is.

Charts remove this entirely by showing only the path taken, which makes past decisions look simpler than any decision has ever been while it was being made.

The correction is process, not prediction

Because the illusion attaches to outcomes, judging decisions by their results reinforces it. A poor decision that worked out is still a poor decision.

Evaluating whether the reasoning was sound given what was known separates the quality of a judgement from the luck attached to it.

A plan written in advance serves this purpose, since it records the reasoning at the time and cannot be quietly revised once the outcome is known.