Im a bit of a contrarian in this area. I know Ray Kurtzweil thinks we advanced as much in tge last 14 years as the previous 100, but thats tosh. What amazing new technologies have we developed even since the 70s? Silicon chips? Genetic enginering? Rocketry? Solar power? Nuclear power? All those are baby boomer technologies. What advances from the last 30 years even come close to those? I think the truth is we discovered most of the exploitable physics in the mid 20th century and from now on it will be mainly iterative improvement.