Your opponents, who might still be attempting to form their hands, are under pressure as a result, & your point total is reduced. Keeping track of the cards that have been thrown away can alsyono create accounto help determine whether it's safe to declare or if waiting would be better. Players frequently create sophisticated strategies that can give them an advantage over rivals as they gain more rummy experience. Card counting is one such strategy; monitoring which cards have been played can reveal important details about what's left in the deck & what your opponents may be holding.