Fly on 2 × 1 × 1 brick
Q: A (pointlike) fly is sitting at a corner of a 2 × 1 × 1
brick. What's the furthest point from it, measuring along the
surface?
rec.puzzles, 15 Apr 1996
Q: ??? On a centrally-symmetric body, must it be the case that every, or indeed any, longest geodesic's endpoints are antipodes?