What we use in this modern world are the brain modules that served the hunter-gatherer well. We have adapted them to our uses, and they function well indeed.
But, ancient life was full of extraordinary cognitive demands. Imagine being on a trail with the formidable predators that roamed the earth then. Life was a very long camping trip with no camp stove or energy bars to get us through. . . .
So, if you take this highly developed mind and put it in an office cubicle doing spreadsheets all day, you’re using ancient brain modules in a strange and possibly unhealthful way. . . .
Life was a far greater mystery then, far more dangerous and far more cognitively demanding than the lives we live now. What we might call an adventure now is what life was like then, every day.
Our ancestors lived in small bands of around 25 other people. Every person was important to the survival of the band. They all had value and contributed in some way. Now you can see thousands of other people and the comparison is almost always hard on your pride or sense of worth. And it’s hard to see your contribution in the broader scheme of things. I think this contributes to a sense of a lack of purpose and meaning in your life . . .
The rest of the interview (which is extensive) is worth reading for Dr. De Vany’s comments on evofitness, body building, insulin sensitivity, human growth hormone, etc.