Quote:
Originally Posted by klizzle
I mean this in the sense of being able to establish a civilization and construct buildings, communicate, etc. I think it's very possible that during the age of dinosaurs intelligent species could have arisen and created civilizations before the end of the dinosaurs and we would be unable to distinguish it via fossil record. Perhaps a nuclear war caused the end of the dinosaurs instead of a comet, or perhaps this intelligent species created climate change that resulted in the death of dinosaurs. Would it even be possible to tell? Humans have only existed in a civilized manner for the last 10,000 years and if we cause our own demise in the next thousand that's only a blip on the radar for future intelligence to detect.
Unlikely, but possible?
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very possible. if buldings crumble into dirt and sand identicle to that of just rock it would be virtully impossible to tell how intelligent a given species is based on fossils. but if nuclear war was the death of dinosaurs then we would detect changes in radiation levels in soil, kind of how we can not use radiation dating for anything after the 1940s since we invinted the atomic bomb and changed the radiation level in the soil and atmosphere