In a post on the Washington Post's Wonkblog, Mike Konczal of the Roosevelt Institute makes a rather sweeping claim about his ideological adversaries: "Conservatives don't really get that some things are 'public,' and it's hurting their ability to handle the challenges of the early 21st century."

What does he mean by that? He acknowledges the term is ambiguous, then settles on a definition from a leading early-20th-century progressive intellectual:

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