This brings up a strange perspective. Think of all the technological innovations in the early half of the 20th century. Then think of the many innovations in your own lifetime. They come up so gradually that you don't even realize how far we've come (barring space travel, which seems to be an exception). In 1961 we didn't have home computers, and now we have iPhones and Netflix. The Pill was brand new. Most cars didn't even have seat belts, much less crumple zones- because we didn't have interstate highways, either. People living between the Wright Brothers and NASA probably didn't think about how historic their technological innovations were over time, either. This moment of truth is brought to you by Randall Munroe of xkcd.