> When analyzing why a group of objects (usually very small, like successful companies) have a certain trait, it is not enough to find something all these objec

> When analyzing why a group of objects (usually very small, like successful companies) have a certain trait, it is not enough to find something all these objects had in common and say that it was the reason. But it's enough to sell a book claiming so. > At bare minimum, you have to look at all the rest of objects and confirm that they did not have that thing in common too. That would rule out way too many profitable books. /s