Dan Katz teaches and coordinates calculus courses at Brown University. Katz has written puzzle hunt puzzles for the MIT Mystery Hunt, the Gen Con Puzzle Hunt, and BAPHL. His puzzles have also appeared in Wired, MAA Focus, Grandmaster Puzzles (gmpuzzles.com), and GAMES World of Puzzles. His most notorious gift to the puzzling community is the follow-the-deranged-directions puzzle format known as the Duck Konundrum, for which he sincerely apologizes.