Complex sentence: Published in 1988, "Neverness" concerns a medium far-future world where mathematicians have become a kind of caste or religious order, because of their abilities to do the calculations needed for space travel.
Split into simpler sentences: Published in 1988, "Neverness" concerns a medium far-future world where mathematicians have become a kind of caste or even a religious order. This is because of their abilities to do the calculations needed for space travel.