Yes, there is a lot of evidence that some ancient civilizations had technology to do very precise work that would be challenging for us even today. However, I don’t think that fact alone supports some of the more extreme logical leaps to attribute it to “advanced technology” beyond what we possess. I tend to think that we are just missing methods that could have accomplished these feats with simpler technology; methods that have been lost to us since they were probably “trade secrets” among guilds that were never written down, and that have become obsolete over many millenia since we tended to move away from megalithic construction and on to easier to use constructions methods like brick and concrete.
Ain’t riding the Band Wagons fun?
I just love it.