What kinds of melds they are trying to form can be inferred from their draws and discards. For instance, it can be a sign that an opponent is almost finished with a particular meld if they routinely draw cards from the dionline slots for moneyscard pile instead of the main pile. Your personal choices about which cards to keep or discard can be influenced by this information. Also, during a game, observing an opponent's body language and facial expressions can provide hints about their emotional state and degree of confidence. When discarding a card, an opponent may be struggling with their hand or worried about what you might pick up next if they appear hesitant or frustrated.
