The "reciprocation problem": a mathematical tragedy in relationships regarding how often people should ask each other to hang out The Setup Person X and person Y are friends (or lovers or close work colleagues or whatever). Person X and Person Y happen to both feel the same way about each other (i.e., equal amounts of interest, affection, lust, respect, etc.)Person X's ideal is to make plans with person Y every two weeks, whereas person Y (who has a lower amount of free time, or less need...