As an engineer touring Roman ruins and the museums, what was striking to me was how
modern the Romans were.
For example, we toured Pompeii in early December and it was raining lightly. We got to see the rain systems in action--2000+ year old road grading and rain capturing systems (compluvium/impluvium/subfloor cistern) working as designed.
The Romans had water fountains on every block fed by pressure from the aqueduct, and they were all marked with different figures so that you effectively had a street address even if you were illiterate.
It was also quite stunning to me that the Romans worked glass, and it was common. That's just amazing to me given the temperatures and skill involved.
And, as people noticed, the art of the time was quite good. These food stalls are decorated with quite workable figures as they had to be--common people weren't literate. And the art in the better houses was actively good. The artists had working knowledge of their medium, tools and techniques--no crappy flat faces without depth and perspective here.
We are clever monkeys in any time.