many of Jeffreys' claims, such as the argument that if the Conservatives could have capitalised upon the Beveridge report they would have been the ones with a powerful mandate for pursuing policy, not the Labour party. Addison also changes his stance in this article, stating how he "exaggerated the extent to which 'middle opinion' already prevailed on the front benches" and determining that, in fact he "agree(s) with much of Dr Jeffreys' analysis". There are also a number of other interpretations of the consensus which many historians have discussed such as Labour Historian Ben Pimlott. He says this idea is a "mirage, an illusion which rapidly fades the closer one gets to it." Pimlott sees much disputation and little harmony. He notes the term "Butskellism" meant harmony of economic policy between the parties, but it was in practice a term of abuse, not celebration. In 2002, Scott Kelly claimed that there was in fact a sustained argument over the use of physical controls, monetary policy and direct taxation. Political scientists Dennis Kavanagh and Peter Morris defend the concept, arguing that clear, major continuities existed regarding policies toward the economy, full employment, trade unions, and welfare programs. There was agreement as well on the major issues of foreign policy. Dean Blackburn offers a different argument about the accuracy of the consensus. He proffers that the so-called consensus did not stem from ideological agreement, rather, an epistemological one (if any). He makes clear the ideological differences between the Conservatives and the Labour Party; the latter openly wanting an equal and egalitarian society, while the former was more reluctant, for example. Rather, he suggests that an examination of parties' shared epistemological beliefs – "similar ideas about appropriate political conduct", a "shared a common suspicion of the notion that politics could serve fixed 'ends', and...believed that evolutionary change was preferable to radical change" – would offer a better insight into whether or not there was a consensus or not. Blackburn summarises this saying that instead of "being rooted in common ideological beliefs about the desirable 'ends' of political activity, the consensus may have stemmed from epistemological assumptions and the political propositions that followed from them". Collapse of consensus Market-orientated conservatives gathered strength in the 1970s in the face of economic paralysis. They rediscovered Friedrich Hayek's The Road to Serfdom (1944) and brought in Milton Friedman, the leader of the Chicago school of economics. He