(Off-topic) I liked the first half of Seveneves, but the second half with megastructures... felt like a let-down, especially after the brilliant first half. The

(Off-topic) I liked the first half of Seveneves, but the second half with megastructures... felt like a let-down, especially after the brilliant first half. The future civilization can hitch an entire city on a space elevator, but an aircraft pilot wears a catheter - because they somehow can't create an aircraft with a regular toilet. (I'm half convinced that Stephenson is aroused by future humanoids wearing cool technology and nothing else.)