I think in general poor people have better social skills and deeper connections with their peers--being poor necessitates having a strong social network, because having people who can help you out when you're down on your luck is important when you don't have money to buy yourself out of that situation.<p>That said, I'm not sure if that's a good indicator of 'wisdom' as this article seems to suggest. I'm certainly not going down to the local trailer park to ask for advice next time I have a problem.