In the ultimatum game, the classical economist's prediction is that the receiver should accept any amount because getting something is better than nothing; however, across cultures, people typically offer approximately 50% and reject low offers (poor people are more likely to reject than wealthy people).

Meaningful engagement is a deep cognitive instinct and the right antidote to the suffering inherent in limited existence; when engaged, you're in your domain of competence, expanding it at the same time—exploring known territory while peering over the fence at new territory.