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it is easier to recognize other people’s mistakes than our own.
if there are several ways of achieving the same goal, people will eventually gravitate to the least demanding course of action. In the economy of action, effort is a cost, and the acquisition of skill is driven by the balance of benefits and costs. Laziness is built deep into our nature.
studies have shown that people who are simultaneously challenged by a demanding cognitive task and by a temptation are more likely to yield to the temptation.
The self-control of morning people is impaired at night;
when people believe a conclusion is true, they are also very likely to believe arguments that appear to support it, even when these arguments are unsound.
high intelligence does not make people immune to biases. Another ability is involved, which he labels rationality.
rationality should be distinguished from intelligence. In his view, superficial or “lazy” thinking is a flaw in the reflective mind, a failure of rationality.
if you were primed to think of old age, you would tend to act old, and acting old would reinforce the thought of old age.
You can see why the common admonition to “act calm and kind regardless of how you feel” is very good advice: you are likely to be rewarded by actually feeling calm and kind.
when we are uncomfortable and unhappy, we lose touch with our intuition.
“I’m in a very good mood today, and my System 2 is weaker than usual. I should be extra careful.”
Gilbert proposed that understanding a statement must begin with an attempt to believe it: you must first know what the idea would mean if it were true. Only then can you decide whether or not to unbelieve it. The initial attempt to believe is an automatic operation of System 1,

