Are Rocket Jumps Or Double Jumps Actually Possible?

We do a lot of amazing, if not unrealistic things in video games. Take rocket jumps and double jumps, for example.

Your immediate reaction might be "no, of course we can't rocket jump or double jump in real life"—because really, how would we be able to propel ourselves with a rocket like in games? How would we jump twice?

Here's Vsauce3 getting into the nitty gritty of all of that, including what would be necessary to actually be able to do these things.

Now I must find a way to Titan. I must experience a double jump. It's actually possible, people!

Are Rocket Jumps Possible? [Vsauce3]