The main trend with the theme episodes is that anywhere there is a misconception about the way the physical world works, we're finding fertile material. Whether it's in a phrase like "going over like a lead balloon" or "a needle in a haystack," or tackling movie myths or even a genre, like MacGyver or James Bond, we're finding that all these things can lead to people believing the world works in a certain way. It might not be correct, but we can test out if it's true.