This is my summary: human beings are basically big babies, driven by their desires – me, me, me; want, want, want. The job of a capitalist economy is to meet these desires without questioning them. Capitalism does not, for instance, make any moral distinction between what people want and what people actually need – between, say, PlayStations and penicillin. As far as capitalism is concerned, they all count as the same thing – choice. And capitalism is designed to maximise our choices through a rational triage system called the market. Some people win from this system, some lose. But, mathematically, more people get to realise more of their choices under this system than under any other. But the market has no view as to whether these choices are worthwhile or not. Nor whether they contribute to the common good or the long-term survival of the planet. It just seeks to maximise them.