it’s hard to think of a proposition that has been more thoroughly refuted by history than the notion that social insurance undermines a free society. Almost 70 years have passed since Friedrich Hayek predicted (or at any rate was understood by his admirers to predict) that Britain’s welfare state would put the nation on the slippery slope to Stalinism; 46 years have passed since Medicare went into effect; as far as most of us can tell, freedom hasn’t died on either side of the Atlantic.