How do we change the minds of climate deniers? Could learning about the science of global warming ever persuade a skeptic? Or are humans just too irrational to be persuaded by facts and evidence? These are some of the questions we’re asking in this week’s show.

Classic theories of choice posit that our preferences are transitive. So, for example, if you prefer the apple to the orange and the orange to the banana, then you’ll also prefer the apple to the banana. Now one interesting question in psychology is the extent to which human preferences are actually transitive.

Why do people deny climate change? A common view is that such people reject science. But in most cases, it’s not all science they reject. After all, most climate deniers believe in electricity and that the earth goes around the sun. So what is going on? As I see it, there are at least five types of climate denier.

Crony beliefs are beliefs you have partly because you want to believe them. But is it really possible to form beliefs because you want to have them? Does that explain why so many people seem to believe things that serve their self-interest? Or is there another explanation for that?