Quote from Reitberg:
OH, I can addapt, and I get paid, but I just only go short. So I wait for shorting opportunities and then I go in and cover the low. I just hit the swing highs. I know that it is seen as "wrong" not to play the upside, but I'm just honestly not comfortable longing anything. I'm kind of bearish, and it has paid off.
So if I'm not short, I'm sidelined. That is a form of adaptation. Nobody says that you have to play both sides, and some people are better at playing one side than the other. That is the fascinating aspect behind the psychology of the trader; we all believe something different, and we all act differently, and when everybody begins to believe one thing, the trend reverses.