In any competitive game, such as Rummy, you can gain a substantial edge by identifying and taking advantage of your opponents' errors. This necessitates having erummy freexcellent observational skills and being aware of typical gamerpitfalls. You can change the momentum in your favor, for example, if your opponent discards a card that might allow you or another player to complete a run. Being aware of the cards being played & discarded lets you spot opportunities that others might miss.