" It's a pervasive and beguiling myth that the people who design instruments of death end up being killed by them. There is almost no foundation in fact. Colonel Shrapnel wasn't blown up, M. Guillotin died with his head on, Colonel Gatling wasn't shot. If it hadn't been for the murder of cosh and blackjack maker Sir William Blunt-Instrument in an alleyway, the rumour would never have got started. "

― Terry Pratchett , Feet of Clay (Discworld, #19; City Watch, #3)