“Go with it. You talk about decent people living decent lives as if that doesn’t mean anything, like it’s not a big deal. But you listen – this ‘decent’, it is the only thing that matters. I don’t care if you theorise, Mr Scientist, a machine that makes all men kind and all women beautiful if, while making your machine, you don’t stop to help the old mother cross the street, you know? I don’t care if you cure ageing, or stop starvation or end nuclear wars, if you forget this –” she rapped her knuckles against my forehead “– or this –”