It is my impression that not many aqueducts were built either.
My understanding is that not many were built because they didn’t have much need for them (since they didn’t have the huge cities that needed water imported). They did eventually lose the specific knowledge of building aqueducts, much like we today have lost the knowledge of how to make Dhaka muslin, but it represents a single datapoint not an overall regression.
Cathedrals are an example of a engineering project that was possible in medieval Europe but not in Roman Europe.
Europe 1300 A.D. was more advanced both technologically and scientifically than the Roman empire in a lot of ways. Europe 1000 AD is more debatable and Europe 700 AD surely was not more advanced.
My understanding is that not many were built because they didn’t have much need for them (since they didn’t have the huge cities that needed water imported). They did eventually lose the specific knowledge of building aqueducts, much like we today have lost the knowledge of how to make Dhaka muslin, but it represents a single datapoint not an overall regression.
Cathedrals are an example of a engineering project that was possible in medieval Europe but not in Roman Europe.
Europe 1300 A.D. was more advanced both technologically and scientifically than the Roman empire in a lot of ways. Europe 1000 AD is more debatable and Europe 700 AD surely was not more advanced.