Everybody else is doing it

Sometimes your associates will say “Everybody else is doing it.” This rationale is almost always a bad one if it is the main justification for a business action. It is totally unacceptable when evaluating a moral decision. Whenever somebody offers that phrase as a rationale, in effect they are saying that they can’t come up with a good reason. If anyone gives this explanation, tell them to try using it with a reporter or a judge and see how far it gets them.

Warren Buffett, Berkshire Hathaway Letters to Shareholders

Either–Or Thinking

Mankind likes to think in terms of extreme opposites. It is given to formulating its beliefs in terms of Either-Ors, between which it recognizes no intermediate possibilities. When forced to recognize that the extremes cannot be acted upon, it is still inclined to hold that they are all right in theory but that when it comes to practical matters circumstances compel us to compromise.

John Dewey, Experience and Education