“His argument (one of the delights of The Ascent of Man is that it consists entirely of argument) begins by directing our attention away from the common heritage of animals and toward one particular difference between humans and all other present-day species: Every other species is exquisitely adapted by evolution to a certain range of environments, and to a certain range of lifestyles that it is genetically programmed to act out in them. But evolution ‘has not fitted Man to any specific environment. On the contrary… he has a rather crude survival kit. And yet… one that fits him to all environments.’”