These are possibilities for great growth, if the technology can be developed. The first 3 are 50-100 years away though. 1) Asteroid mining and construction in

These are possibilities for great growth, if the technology can be developed. The first 3 are 50-100 years away though. 1) Asteroid mining and construction in space. 2) Nanotube or other materials technology enabling space elevators or Skyhooks, or other https://en.wikipedia.org/wiki/Non-rocket_spacelaunch https://en.wikipedia.org/wiki/Non-rocket_spacelaunch 3) Fusion through alternatives to tokomaks 4) Self driving, electric cars 5) AI and robotics 6) Micro Black holes as power sources (ok this one's 500-1000 years away)