Engineers don't care about mathematical rigor—they just want their 3D rotations to work. Meanwhile, mathematicians are silently judging as engineers gleefully embrace quaternions without understanding a single theorem behind them. It's like watching someone use a nuclear reactor to make toast. Sure, it works, but at what cost to your mathematical dignity? Engineers will happily skip the proofs and say "the code compiles, ship it!" while mathematicians weep into their coffee.