Convincing

' The human mind is unique in its ability to recall the past, plan for the future, reason abstractly and navigate complex social relationships. But why has the physical evolution of Homo sapiens resulted in such convincing mental superiority? To summarize, human beings have "suites of genes that probably cause their brains to be 'plastic' and thus receptive to change far longer (to the age of about five) than is true for chimps or monkeys (whose brains are plastic for less than a year after birth)."'