Monkeying around

Here's a link to a NY Times article about the results of teaching capuchin monkeys how to use money. I loved the closing paragraph:

When taught to use money, a group of capuchin monkeys responded quite rationally to simple incentives; responded irrationally to risky gambles; failed to save; stole when they could; used money for food and, on occasion, sex. In other words, they behaved a good bit like the creature that most of Chen's more traditional colleagues study: Homo sapiens.

I'm just not sure whether it makes me laugh or cry. :)