People were talking about space elevators before graphene or carbon nanotubes existed. I think the original idea came from Heinlein and when I was a kid there w

People were talking about space elevators before graphene or carbon nanotubes existed. I think the original idea came from Heinlein and when I was a kid there was no material that was even remotely feasible but it was still a tech that people talked about being possible in the "near" future.