In order to avoid the No True Scotsman, you need to identify a priori a group that will make money. "Intelligent" and "motivated" don't cut it, because they are

In order to avoid the No True Scotsman, you need to identify a priori a group that will make money. "Intelligent" and "motivated" don't cut it, because they are going to be identified a-posteriori, from the stock market winners, and that's circular reasoning. I know many smart people who lost money on the market, that's not a good characteristic.