Widow-maker: a combo of causation and constitution

Woody Allen, Kevin Costner: cause is normal reading, but giving constitution instead. (Q: can you think of a joke that works the other way around?  Constitution/ standard/ qualifying is standard, expectes reading, but you give cause instead?  Or switching qualifying and function [either way]?  A limit here is that function and causal explanations are typically requested by "why?", but constitutional explanations typically follow "how?" (or some constrained 'why', like 'why does X qualify as a Z?')

(NB: w/ qualification 'how', we *can* have a contrast class -- 'How does X count as a good Z, but not A?'  Unlike procedural 'how', as RIG Hughes noted)

Widowmaker is like medical cartoon: "Good news, Mr. X: your cholesterol's stayed the same, but the medical findings have changed." Cartoon: *Hippocrates* April 96, p. 11: