where are these mysterious specifications?
Any species that stays on one planet is just waiting for extinction. Oh and to the earlier ac - we are in a major extinction event right now, didn't you notice?
First nation/corporation to settle space wins. At this stage it looks like the Chinese.
Space starions and space arcs are feasible, even with our current technology.
Growth in an enclosed system is limited. Spread it into space and the limits come much later.
Personally, if I had cancer I would try everything else before I would accept barbaric chemotherapy treatments. As the saying goes, "if the cancer doesn't kill you, the chemo will".
And in my case the chemo mopped up the excess cancer cells from all the cancerous lymph nodes they couldn't remove via (barbaric) surgery. So it might be barbaric but in my case it worked. One more nodule removed, several unremovable but controlled by (barbaric) Avastin. So chemo is bad, very bad, but it can work. Of course there are the alternatives..... (no thanks).