We’ve begun to behave as if young people are special; more virtuous and wiser than adults. It’s wrong and it’s creepy and we’ve got to stop it — not for our sake so much as for theirs. It looks as if, come Friday, 16-year-old Greta Thunberg will win the Nobel peace prize, and if she does the whole Nobel show will double up as a sort of topping-out ceremony for the cult of youth.