"From my practice as a psychiatrist and my experience and observations in general, I have become familiar with the common errors related to the failure to think well. One, of course, is simply not thinking. Another is making assumptions in thinking, through the use of one-dimensional logic, stereotypes, and labelling. Another problem is the belief that thinking and communication don’t require much effort. Another is assuming that thinking is a waste of time, which is a particular factor in the quiet rage we experience around the failure to solve many social problems."