Recently one of the big banks ran an advertising campaign praising the honesty of average Australians. A characteristic I’ve observed myself. Handing in a wallet, returning a lost pet, pointing out being undercharged for an item of clothing—most people (in my experience) do the right thing when given the opportunity. However, I’d dearly like to know why some otherwise upstanding, law-abiding members of the community dispense with all propriety while in bars and restaurants.