This presentation is pretty interesting. Humans are not always rational, so are monkeys. Interestingly, their "irrational" behavior may be somewhat as predictable as the "rational" ones are. Mark Buchanan argues that there is a pattern to everything. In this video, Laurie Santos looks for the roots of human irrationality by watching the way our primate relatives make decisions. A clever series of experiments in "monkeynomics" shows that some of the silly choices we make, monkeys make too.
