The strategic use of discards is a key component of rummy, influencing both the game's flow & each player's strategy. The Value of Careful Disposal. A player'stypes of pcie slots opponents can learn important details about their hand composition and possible melds each time they discard a card. Discarding a card that another player might need can unintentionally help them form their melds, so it's important to be careful what you discard. Information Gathering from the Discards of Opponents.