She stayed behind because she thought it would be worth while trying the door of the wardrobe, even though she felt almost sure that it would be locked.
I think what the question you're asking is saying that, you know, if we want to look at, whatever, utilitarianism, policy, do you want to maximize world wealth.
I know, and not surprisingly I suppose, Afghanistan didn't fare much better, 83 per cent couldn't locate it on the map, there must be something about that region, 76 couldn't identify Saudi Arabia either.