It probably was eating a lot of things like insects, and that is most of human history. But then around 10 or 15,000 years ago, we have the advent of human beings taking nature into their own hands. Instead of saying, let's just follow the game wherever the game might migrate to, let's actually domesticate these animals. Let's take some of them, start breeding them so they're more suitable for human consumption so that they are easier to raise, maybe more robust, and we will breed them, and we will raise them for milk, for meat. We also started to domesticate plants. Instead of saying, okay, let's just gather those berries there where it happens to emerge, let's actually start to plant things, and on a very predictable way, be able to harvest them and so have a more predictable food supply. Both of these things allowed human beings to have a higher population density, to start to settle down, to have a more sedentary life.