It looks homebrewed. But I'm going to buck the trend and say I think there is net value here for engineers. (I have no idea whether the paper is original resear

It looks homebrewed. But I'm going to buck the trend and say I think there is net value here for engineers. (I have no idea whether the paper is original research or not.) Weaknesses: (W1) They should say "spiral." (W2) "Optimal" seems a little enthusiastic. They should talk mostly about queries that aren't chosen to be optimal for the spiral. Value: (V1) The central idea of the paper becomes clear in a few minutes. That's a very small investment for the reader. (V2) They show that copying the "magic" Hilbert curve can be worse than just thinking and picking something for yourself. That seems to be true even for box-shaped queries that don't enclose the center of the spiral. But I think the value here is not "use a spiral." It's "consider a bunch of different scan shapes."