exactly. there are superhuman freaks of nature: albert pujols and michael phelps come to mind. in addition, this study necessarily discounts the contribution of those that have actually changed entire industries. a single person might have one hour of production that creates a huge amount of wealth, maybe the ten years of research that culminates in a solution that, to get hyperbolic, changes everything. i think the key take away here is to not force people to work more than that want and need to.