You can learn a lot about your opponents' hands and predict their tactics by keeping track of the cards they are discarding. You can also decide which cavip bonusrds to pick up from the discard pile and which ones are safe to discard from your own hand by keeping an eye on what your opponents are discarding. It's crucial to watch how your opponents are handling jokers in their own hands in addition to keeping an eye on the cards they are discarding and picking up.