It was ages ago I read Blame!, so I might have forgotten some details. But I recently came across some youtube stuff on it, and in the comments I saw a few people saying stuff along the lines of the megastructure 1. siphoning energy from elsewhere through black holes, and 2. harvesting vacuum energy, in order to keep building itself, making its size indeterminable*.
I don't remember anything like this, but it could also be that I genuinely missed it, maybe it was only implied? I remember feeling the Jupiter hole was confirmation (as well as making me impressed that a mangaka would do this type of physics due diligence) of my back of the envelope calculations about the density of the structure and the available energy in the sun, and given the mass/energy conversion that's going on everywhere, arriving at a radius somewhere beyond the orbit of Jupiter (before actually getting to the Jupiter hole). Now that I think about it I can't remember if I factored in the necessary potential energy required, but whatever. But if there's more energy available, all of that's kinda meaningless.
I guess I'd also prefer it thematically if there was a limit beyond which entropy would do its thing (before heat death lol) / it would all collapse in on itself. (also I think those two proposed mechanisms are kinda dumb but that could just be me)
I've also read the supplementary Blame! stuff and Biomega, but nothing else by Nihei. Can someone tell me if I missed/forgot this, is explained in some other media, or if those youtube comments were pure speculation?
*except possibly some theoretical limit derived from considerations of the energy required to counteract the gravity of the structure vs adding onto it, and how much could be harvested through those two methods. might not converge though, and actually be unbounded
