" it would be possible to become a Stone Age native. For over 30 years, I programmed and conditioned myself to this end. In the last 10 of it, I would say I realistically experienced the physical, mental, and emotional reality of the Stone Age. But to borrow a Buddhist phrase, eventually came a setting face-to-face with pure reality. I learned that it is not possible for human beings as we know them to live off the land. "

― Jon Krakauer , Into the Wild