"Everything is possible until it isn't".
.
I'm sorry but this is one of the most foolish things I have ever heard and begs an entire essay all on it's own. But that will have to wait for another day. Jumping off a cliff is survivable until it isn't.
.
Our minds can dream up many more ideas of things than what can exist in the real world. Many of our ideas on what to do next are vastly under informed. See the Hagens lecture at 30:43.
.
https://youtu.be/YUSpsT6Oqrg?t=1843
.
Human civilization is nothing without experience and forethought. False assumptions and corresponding poor decisions waste resources on dead end ideas. We must focus what we have left now that the world is full and everything is approaching peak, and choose wisely.