Red
Well-Known Member
Haven't found this while using Google (have not formed my question correctly) - why the scientists seem to be 100% certain, that there were no humans or human civilization during the dinosaur era? Isn't it possible that everything a la tall buildings could be completly destroyed without evidence after millions of years?
You did not know what search terms to use. There is indeed some thoughts along those lines, published fairly recently. It's very interesting to see scientists recently examining what amounts to "out of bounds" ideas. You have, for instance, the head of Harvard's Astronomy Dept. publishing a paper suggesting a particular asteroid that arrived from outside our solar system might be an alien probe, and you have ideas like this:
https://www.scientificamerican.com/...vilization-have-existed-on-earth-before-ours/
https://www.theatlantic.com/science/archive/2018/04/are-we-earths-only-civilization/557180/
https://arxiv.org/pdf/1804.03748.pdf