It could indicate that an opponent is working toward certain sets or runs that don't need those high-value cards if they routinely discard high-value cards while keeping lower-value ones. Identifyimgm slots loginng these trends can give you useful information that lets you modify your approach appropriately. Also, knowing which cards are being removed from the discard pile can provide hints about the hands of your opponents. When a player picks up a card that doesn't seem to be connected to their previous discards, it could mean they're attempting to change their strategy in the middle of the game.