The phrases ‘certainty is an illusion’ and ‘think probabilistically about the world’, both introduced in the first class, are the first two examples … - David Franklin

I remember he said something like ‘this should be completely obvious to you’, and to me that was crushing… we had a conversation after the mid-term exam, in which the class had averaged 20 out of 90. It was 25 years ago, and I still remember what he said: ‘Frustration is necessary for learning. This idea that you can enjoy learning is a very American idea’.” Dan pauses, the memory of that conversation etched on his face. “I felt so offended by that claim. My professor felt that to learn, you had to push yourself. One of my dreams was to go back to Venezuela[7] and start a university, and I vowed that I would write in the walls of the university that frustration was not necessary for learning.

On the whiteboard in Dan’s office, he has written in bold black marker the phrase ‘TEACHING ≠ LEARNING’. He believes that most lecturers pay too much attention to what they are doing in a class. Planning is important, and professors are right to spend time in advance thinking about how the class will be structured. One downside, though, is that professors will often evaluate themselves against what they said they would do in the plan. If they covered the material without tripping up, and gave the right explanations at the right time, they will be happy about how the class went.

The brain has conflicting goals: to provide you with information, and to reduce your anxiety about the worrying outcome. If you wanted Clinton to win in 2016, your brain achieved both goals by accepting the 30% figure but telling you it would not happen.