Experts don't know exactly where the boundaries of their expertise are.

Most people are highly optimistic most of the time.

Organizations may be better able to tame optimism than individuals are.

Doubting what you see is a very odd experience. And doubting what you remember is a little less odd than doubting what you see. But it's also a pretty odd experience, because some memories come with a very compelling sense of truth about them, and that happens to be the case even for memories that are not true.

Below an income of ... $60,000 a year, people are unhappy, and they get progressively unhappier the poorer they get. Above that, we get an absolutely flat line. ... Money does not buy you experiential happiness, but lack of money certainly buys you misery.

This is the essence of intuitive heuristics: when faced with a difficult question, we often answer an easier one instead, usually without noticing the substitution.

One of the problems with expertise is that people have it in some domains and not in others.