It turns out that if you look at enough hands over enough hours, you do start to develop a sense of patterns that may yield meaningful data. The patterns tend to come in two flavors. The first has to do with thought process: How does a person approach and think about the game? “The way people handle their chips when they are more indecisive, or their bet style at the top of their range—these are the sorts of things we pay attention to,” Blake says.