[simonh]

You're betraying an extremely. And I mean extraordinarily, laughably modernistic world view. We were making accheulian hand axes for well over one million years. Plus. Technological development during that period really didn't look very exponential. How do you measure change when literally nothing new is developed for tens of thousands of generations?

If you only look at development since agriculture then yes, but that's less than one percentof the time since the taming of fire.