This may offer more hints regarding their hand and their goals. An opponent may have drawn a card they were hoping for and be getting close to forming a winning combination, for instance, if they appeasatakagr enthusiastic or eager to draw a card from the draw pile. On the other hand, if an opponent discards a card and looks disappointed or frustrated, it could mean that they are having trouble finding the right cards & forming their sets and sequences. It takes strategic thinking, acute observation, & the capacity to decipher nuanced cues and signals to analyze your opponents' moves in a game of rummy.