We are unaware of them. As a result, many of our beliefs about how people behave-including beliefs about ourselves-are wrong. That is why we have the multiple social and behavioral sciences, with a good dash of mathematics, economics, computer science, information science, and neuroscience. Consider the following simple experiment. Do all three steps: 1. Wiggle the second finger of your hand. 2. Wiggle the third finger of the same hand. 3. Describe what you did differently those two times.
( Donald A. Norman )
[ The Design of Everyday Things ]
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