The human capacity for invention is unparalleled. We have developed technologies that have allowed us to survive and thrive far beyond the ecological niches that constrained our ancestors. While our innovation has allowed us to break loose from the constraints of our home continent, Africa, and even our home planet, the actual way in which our species adopts new technologies remains a subject of huge debate among those scientists who study the past. Does one hominid ancestor start to shuffle upright, and the rest follow? Does the first human to loop a piece of string through a shell bead inspire the rest of the species to create the world’s first jewelry? Or do different animals take up the same new adaptation at different times, because it solves a problem that appears in many places?
We know that in some of our closest living relatives, the primates, new technical skills are passed on through direct learning. Macaques, in particular, are responsible for innovative behaviors that have been transmitted through their societies by individuals who have seen and observed them and then adopted them as their own. This is true of behaviors as varied as “hot tubbing” by the macaques of Japan’s northern Hokkaido island and the habit of dipping sweet potatoes in the sea to “salt” them developed by macaques on Koshima island further south….
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After the truth-shower 