Article: Why Marxists Need Darwin: Evolutionary Mismatches Challenge the Darwinian Unconscious - Marx claimed that human beings are 'the ensemble of social relations.' This implies that bio-evolutionary life has no significant impact on present humanity. If we include the field of Darwinism 'evolutionary psychology', do we risk being called biological determinists? How is the evolutionary psychology of hunter-gatherers different from the evolutionary psychology of industrial capitalist societies?