A Hunter-Gatherer's Guide to the 21st Century: Evolution and the Challenges of Modern Life

by Heather E. Heying

sex roles inherited from a long line of ancestors are biological solutions to evolutionary problems. They are, in short, adaptations that function to facilitate and ensure lineage persistence into the future.

This is a hard pill for many to swallow, but the truth is that culture exists in service to the genes. Long-standing cultural traits are as adaptive as eyes, leaves, or tentacles.