And how is it possible that those 490 calories can be served to me for an amount of money that if I make the minimum wage here in the US I can earn in 11 minutes? And most importantly, should I be delighted or alarmed to live in this strange world of relative abundance? Well, to answer that question, we're not going to be able to look strictly at history because there isn't a written record about a lot of these things, but thanks to archaeology and paleobiology, we can look deep into the past. Let's go to the Thought Bubble. So 15,000 years ago, humans were foragers and hunters. Foraging meant gathering fruits, nuts, also wild grains and grasses. Hunting allowed for a more protein-rich diet, so long as you could find something with meat to kill.