An opponent may be trying to finish particular sets or sequences if, for instance, they routinely remove particular cards from the discard pile. Early detection of these trends allows you to rmmymodify your own approach, either by preventing them from obtaining key cards or by completely shifting your attention. You can also better predict other players' moves if you know how they approach the game. Some players might play aggressively, throwing away valuable cards fast and without much consideration, while others might play more cautiously and keep their cards longer.