I seem to recall that one of the Speccie compilers is a mathematician by trade. There have certainly been puzzles requiring a tad of knowledge of that area before.
well, I have the grid completed but have no mathematical ability to solve the calculation - am I dealing with 101010111110? And why is 8d "shell" - can't find any reference that works for that ...
ah ... 101010111110 is giving me a 3-letter word that fits the title. Is that all it is? Have no idea ho to do the calculation without googling, though. And 8d still confuses ...