Among primates, humans are in a situation not unlike the cave tetra’s. Homo sapiens have achieved their impressive success by adapting to an extreme and unusual ecological niche, one very different from that inhabited by our primate ancestors and closest primate relatives today. In the same way that the cave tetra can no longer survive out in the bright, terrifying world of the surface river, humans have become so dependent upon culture that we can no longer live without it.
