It’s one of the basic constructs of classical economics – the concept of the opportunity cost. Steve Keen admits it works at the individual level – you are listening to this podcast at the expense of doing something else, for example. But does the theory work when applied to broader economic thinking? No, says Steve – it’s a case of false equivalences, that renders it meaningless. Does that mean it’s useless as a tool for economists? And is there a way Phil Dobbie can use it as a way of getting out of mowing the lawn?

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