To understand error in judgment, we must understand both bias and noise. - Daniel Kahneman

Nothing in life is as important as you think it is when you are thinking of it.

When the question is difficult and a skilled solution is not available, intuition still has a shot: an answer may come to mind quickly — but it is not an answer to the original question. The question that the executive faced (should I invest in Ford stock?) was difficult, but the answer to an easier and related question (do I like Ford cars?) came readily to his mind and determined his choice. 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.

In a negotiation situation, for instance, good mood helps. People in a good mood are more cooperative and elicit reciprocation. They tend to end up with better results than do unhappy negotiators.