Well technology (and science which is different) changes so fast lately (last 60 yrs or so) cause, IMHO, we ain't all scratching around trying to grow food or hunt buffalo. So if you don't have to do that, then those few (0.01%) of the population that can make changes in technology (and science) are able to do so. So someone who makes, say, semiconductor chips, can concentrate on doing just that one part of their job better or having 'a better idea'. Just in case you know anyone who does that, I mean.
It's Amino world without Chemists