An opponent's strategy may be exposed & effectively countered if they routinely pick up some cards while discarding others. Also, it can be easier to rapidly evaluate your own hand for possiblecat time slots melds if you are aware of common sequences, such as sets of three or runs in numerical order. The more proficient you are at identifying these trends, the more capable you will be of making winning strategic choices. A key component of rummy that new players frequently ignore is the discard pile. Your gameplay can be greatly improved by knowing how to use this resource efficiently.