In hind-sight, we look at previous cultures and people as less, or even stupid. Sure, their technology was less, and the median level of knowledge of math, science, and write was a lot lower. That actually makes their achievements rather signification, in a way.
We could build stone henge & the pyramids with all our wonderous technology. But take away our technology, and I doubt that we could do it again.
Now... The religious, philosophical, and medical theories from ancient cultures... Now those are totally inferior to ours... bwhahahahahahaha!