You are currently viewing the summary.
View Full TextLog in to view the full text
AAAS login provides access to Science for AAAS members, and access to other journals in the Science family to users who have purchased individual subscriptions.
More options
Download and print this article for your personal scholarly, research, and educational use.
Buy a single issue of Science for just $15 USD.
Summary
Despite ardently defending his theory of natural selection, Alfred Russel Wallace felt that evolution alone could not account for our species' unique features, including our big brains, mental abilities and moral sentiments. In the past decade, a new hypothesis has matured that suggests that another "power" may indeed have helped drive natural selection in humans, although it is rather different from the one Wallace imagined. In Darwin’s Unfinished Symphony, Kevin Laland makes a powerful case that what began as a small increase in the fidelity of social learning may have made all the difference in human evolution.
