I'm not entirely convinced by it. But even if I was, I'd still stand by my claim that many people speak about this with unwarranted confidence. This comment thr

I'm not entirely convinced by it. But even if I was, I'd still stand by my claim that many people speak about this with unwarranted confidence. This comment thread has lots of people who seem to know for sure that they do/don't have it, and also several definitions such that I could easily self-diagnose in either direction by picking the right one.