 by going through his statistics, by going through his metrics, by going through his numbers. He learned that this setup was working, this setup was not working. As long as he eliminated that setup that was working, just by method of elimination, his profit grew. I think trading is really simple on a technical kind of thing. But when the demons comes along, that's where it gets tricky. That's where it gets like, oh, I'm buying low of days, but I know this stock is going to bounce. So that conviction like mixes up and makes you take emotional decisions. That's why I think technicals are very important. Like, if you don't know the technicals, you wouldn't be able to trade.