The financial crises since 2007 have led to a resurgence in the stock of John Maynard Keynes. Recognised as one of the giants of economics, Keynes had been overtaken and largely forgotten by the neo-classical economics that had dominated public policy since the 1980s. Yet, Keynes’ concept of government stimulus spending became the go-to policy for a number of world governments desperate to avoid economic catastrophe. As Robert Lucas, a prominent member of the neo-classical orthodoxy, has dismissively remarked, “Everyone is a Keynesian in a foxhole”. Is this the limit to which Keynes is of use to us in the present?