Poor analogy once again. If you want to talk roads... The proper analogy is that we have roads that define paths to and from places we need to go. Progress does not change the path, and replace it with a new route. Progress embraces the route and expands it, taking it from a dirt trail, to a gravel road, to a paved road to a multi lane road... So more and more vehicles can use the road without being mired in traffic jams. Then progress adds stops along the path... Places for food, for gas... Things to make the road more useful for us. Things to make it better. Your analogy is basically that in order to make a road better, you have to abandon it entirely and make a new road somewhere else.