Found a rule while deleting my reddit comments

Seriously need to watch this if you do not know the O'Neill cylinder part, it's only a 3 minute video of an 8 month Blender based rendering of what an O'Neill cylinder would look like. The structure is from scientific papers and represents the real engineering strength of materials known to present civilization even back in the 1970s. The only reason this structure does not exist is because of political will and funding. I'm no tech bro fanboy, and especially not of Bezos, but if you ever happen to listen to him parrot the rhetoric about moving manufacturing into space and making Earth like an ecological preserve for life, this is the space based megastructure that makes that possible. Indeed Bezos is one of many that have been talking about the O'Neill cylinder. This little video rendering even shows the dual counter rotating aspect required for stability. However, the general consensus of more modern designs is that there would be areas of transparent material to best make use of solar radiation. Such a structure flips many of our social constructs and assumptions on their head. The primary economy inside such a structure is actually heat. Dissipating heat is hard in space. Radiating heat into the void is not very efficient. Heat is therefore the primary constraint on activities and will be rationed or traded as currency. The interesting thing is that at the present, we are far closer to this reality than it may at first seem. While it may appear idealistic or frivolous to think of such structures and what seems like science fiction, the reality is that wealth is the only thing holding us back from this expansion.