how do you quantify the inventions to say "nothing much" was invented? I have the feeling we underestimate how much stuff has been invented and forgotten. For

how do you quantify the inventions to say "nothing much" was invented? I have the feeling we underestimate how much stuff has been invented and forgotten. For example, if you consider architecture the romans used half a dozen kind of opus to build walls, different varieties of arches, cement mixtures, hollow bricks and sunken panels to allow for lighter domes, both rib and barrel vaults, and likely a bunch of other things I never heard about. A lot of that stuff has been superseded, so we don't really care a about a dozen old cement mixtures, or pure wood techniques, but it doesn't mean they were not invented.