Please re-read his last sentence. Also, this doesn't really affect my point. Complicated, advanced, cheap, fashionable, etc are all valid factors in how/why th

Please re-read his last sentence. Also, this doesn't really affect my point. Complicated, advanced, cheap, fashionable, etc are all valid factors in how/why things get adopted. Picking out one of them, on the basis of a graph, oversimplifies things.