  Coherentists have a response to this objection. McGinn’s argument works because he takes it that the redundancy biconditional means something like “p is true because p”. Only if redundancy biconditionals are understood in this way does McGinn’s argument go through. McGinn needs to be talking about what makes “Snow falls from the sky” true for his reductio to work. Otherwise, coherentists who reject his argument cannot be charged with idealism. He assumes, in a way that a coherent theorist can regard as question-begging, that the truth-maker of the sentence in question is an objective way the world is. Coherentists deny that any sentences are made true by objective conditions. In particular, they hold that the falling of snow from the sky does not make “Snow falls from the sky” true. Coherentists hold that it, like any other sentence, is true because it coheres with a system of beliefs. So coherentists appear to have a plausible defence against McGinn’s objection.