Webthe film not only showcases the grueling physical challenges james faces but also delves deep into the mental and emotional struggles he undergoes. Webthe verge spoke with hutchinson about the dueling theories of endurance, nature versus nurture, and what we can learn from olympic athletes. Webresearchers have previously proposed what’s known as the endurance pursuit hypothesis—the theory that human bodies evolved to chase down prey on foot. Webbritish explorer henry worsley liked to push himself beyond the normal boundaries of human endurance.