[B]ecoming more rational, or not feeling the emotions of social slights, is not part of the human race... not… — Nassim Nicholas Taleb

The information that a person derived some profit in the past... by itself, is neither meaningful nor relevant. We need to know the size of the population from which he came. If the initial population is 10,000 managers, I would ignore the results.

A mistake is not something to be determined after the fact, but in the light of the information until that point.

Many scientists... are... subject to such foolishness... One flagrant example is... global warming... These scientists initially ignored the fact that these [high temperature] spikes, although rare, had the effect of adding disproportionately to the cumulative melting of the ice caps. ...[A]n event, although rare, that brings large consequences cannot be ignored.