By closely observing which cards your opponents are discarding, you can learn more about their possible melds and modify your own approach appropriately. You may concenslots machines gratistrate on gathering those cards without worrying about interference if, for instance, an opponent routinely discards cards from a specific suit, suggesting that they are not pursuing that suit for their melds. You can also make well-informed decisions about which cards to keep or discard from your own hand by keeping track of discards.
