Knew-It-All-Along Phenomenon

It's the common tendency for people to perceive past events as having been more predictable than they were

The phenomenonis more likely to occur when the outcome of an event is negative rather than positive. This is a phenomenon consistent with the general tendency for people to pay more attention to negative outcomes of events than positive outcomes.

Financial bubbles are often heavily biased with phenomenon after they burst. After the worldwide dot-com bubble of the late 1990s and the Great Recession of 2008, many economists have suggested that conditions that seemed insignificant at the time were harbingers of future financial collapse.

Topic: #CognitiveBiases
Source: www.wikipedia.org