A 2012 installation in the small Italian village of Corigliano d'Otranto celebrates the philosophies of Socrates, Plato and Aristotle and their search for a better way of life. Carlo Hermann/AFP/Getty Images hide caption

itoggle caption Carlo Hermann/AFP/Getty Images

A computer designed by hobbyists to look like a brain on display at a Berlin fair in 2012. What happens when we go from crude models to complete working simulations of this all-important organ? Britta Pedersen/DPA/AFP/Getty Images hide caption

itoggle caption Britta Pedersen/DPA/AFP/Getty Images