I actually agree with your underlying urge: space travel should be pleasant! But what separates out engineering from science is essentially economics. In scienc

I actually agree with your underlying urge: space travel should be pleasant! But what separates out engineering from science is essentially economics. In science we don't know the scale a discovery will make until we've made it. Before nuclear weapons how could we know that studying these tiny atoms would essentially end total war between major powers. With engineering smart people looked at the costs and said something like: > We're 99.9% sure this is going to be >2x the alternative and it's not worth it. Just off the top of my head costs that go up: - Instruments (lol, our cameras now need faster f-stops) - Every need now needs to be met during the spinning state and the non-spinning state. (lol, Frank you used the gravity toilet in the middle of the night but we stopped the spinning state yesterday) - Harder to maintain, since crew needs to lose angular momentum as they travel along the bridge and they can't toss things around as easily.