The emotional pattern seems to be something like, “[Karl] Polanyi, a person of the left like me, says many true things, beautifully. Therefore his tales about what happened in economic history must be true.” Marx before him got similar treatment. Lately the more eloquent of the environmentalists, such as Wendell Berry, get it too. People want to believe that beauty is truth. A supporting emotional frame on the left arises from the very idea of historical progress: “We must be able to do so much better than this wretched capitalism.” It is not true, but it motivates.