It is obvious, he has studied intuitive biases throughout his career. However, he himself said that experts make only little difference as compared to the mark

It is obvious, he has studied intuitive biases throughout his career. However, he himself said that experts make only little difference as compared to the market experts in the stock market. On an analogy, he is an expert but just like any other human. He is fallible. Our bias on the Oscar Winning - Halo Effect biased us in buying and reading. And after reading and analyzing the content. Now everything has gone to the hindsight. That is the purpose, concrete analysis of concrete condition based on rationality.