The really meaty space of "cool impactful stuff we can do now" are all organizational problems, not engineering. How do you organize 10k people to build a new

The really meaty space of "cool impactful stuff we can do now" are all organizational problems, not engineering. How do you organize 10k people to build a new city, get them to agree upon a basic design and location, and then get them to actually go do it? There's nothing really stopping you.