@article {398976, title = {Innovation in the Collective Brain}, journal = {Philosophical Transactions of the Royal Society B}, volume = {371}, number = {1690}, year = {2016}, pages = {doi:10.1098/rstb.2015.0192}, url = {http://rstb.royalsocietypublishing.org/content/371/1690/20150192}, author = {Muthukrishna, Michael and Henrich, Joseph} }