You can learn more about your opponent's hand and make better decisions about which cards to pick up and discard by keeping a close eye on the cards that are being picked up and discarded as well as their rebest free slotsactions. Also, it can be helpful to watch how your opponents are arranging sets & runs, as this can share important details about their hand with you. Maintaining track of the cards that have been discarded during the course of the game is another crucial component of observation in the game of rummy. You can then modify your plan of action based on your newfound understanding of the cards that remain in play.