To understand American politics, understand the halo effect – e.g. Hitler loved dogs and children
Consider the kinds of things we see and hear on the campaign trail:
"Vote for me because I have a square jaw, because I support the troops, because I'm tall, because I wear denim like you, because I wear a flag on my lapel, because I read rousing speeches and because I believe in God. I also stay in shape, I can recite the pledge of allegiance."
Notice that politicians are doing all kinds of things to show us that they are capable and likeable. Lost in this commotion is that none of them are showing us that they are well-informed people who know how to lead a country. They don't know how to show us that they are good leaders--that would be an expensive signal in order to be reliable, and very few politicians could pass this Zahavian test. Instead, they are engaged in a beauty pageant, showing us a lot of things that might impress us and resonate with us, hoping that we assume that they are also good at governing. In their efforts to get elected, politicians are heavily relying on the "halo effect." In his excellent new book, Thinking, Fast and Slow (2011), Daniel Kahneman describes the halo effect: