EDIT: I was talking about kids. But Dogbert's comment actually deserves a bit more than "try using common sense instead of set theory" :) I tried thinking of

EDIT: I was talking about kids. But Dogbert's comment actually deserves a bit more than "try using common sense instead of set theory" :) I tried thinking of classes of adults who lack capacity, other than the mentally unfit, senile or criminally insane. There's a lot of young people who are "deemed to consent" (the passive weasel-words of filthy scoundrels) in higher education. I've written about Turnitin in the Times and the "very dodgy circumstances" in which students are inducted into university and then find themselves coerced into tacit agreement to use tools which massively violate their privacy and other rights. The same applies to Microsoft products where institutions block choice and force students use insecure products that they would refuse if exercising their better judgement.