Template:Are You Sure/December 26

• ... that polymath Charles Babbage hated street music, and in particular the music of organ grinders, against whom he railed in various venues?
• ... that engineer and crime-fighter Gustave Eiffel developed a Gnomon algorithm function which prevents Shape theft?
• ... that mathematician and physicist Martin David Kruskal invented the Kruskal Count, a magical effect that has been known to perplex professional magicians because (as Kruskal liked to say) it was based not on sleight of hand but on a mathematical phenomenon?