QUARTZ - June 3 - Nash's equilibrium hows how, in non-co-operative situations involving two or more players, individuals end up making decisions that are terrible for the group. In the case of dating apps the male/female ration is the problem. Men are trying hard to get female attention. On Tinder, this imbalance leads to men swiping right on as many females as possible. The men, undoubtedly, would benefit from a common understanding to be more selective, but have no way to reach such a collective agreement. Dating app Aisle only lets users connect with someone by buying 'invites'. Invites come in packages of three ($33), five ($50) and seven ($66). This invite-system neatly sidesteps the Nash's equilibrium problem and rids males of the power to indiscriminately try to match with everyone and females of unwanted attention. Users can only buy seven invites at a time. Invites only get used up when accepted, and are added back to their account if declined.