What you see is not always what you think you see, my dears. This is particularly the case when we seek to identify cause for a particular effect.
n his book The Halo Effect, Phil Rosenweig lays out 9 specific delusions and shows how they distort the advice you find in management books. They are:
1. The Halo Effect - tending of analysis of a company to reflect only the overall results
2. The Delusion of Correlation and Causality - the lack of proof of causality in many situations