Efficiency vs Effectiveness

A few years ago, the uncle of a friend of mine gave his (now former) wife a huge bunch of roses on 13 February. "But Valentine’s Day is tomorrow," she remarked. "I know," he explained. "That’s why I got them today – they’re much cheaper." She threw them in the bin. Economic rationality simply isn’t very attractive in evolutionary terms; this is why male strippers are more likely to dress up as firemen than accountants.