Originally Posted by furiousferret

Sorry I'm about to get geeky lol.

SpaceX has advanced more in 10 years than NASA and RosCosmos has in the last 40.

Musk gets all the credit but Tom Mueller (his first engineer who recently retired) really should get more. He make engines as a hobby and as a job. His first day testing the first prototype SpaceX rocket, he fired it up at the test site. After the successful test, he told the testers, "We have this place for a day, lets fire it up again." The testers were shocked as that's never happened. Testing continued and ultimately showed the rockets could be reusable. Definitely worth a read if you can find more on him.

Hopefully this one sticks!