I was listening to a debate between George Williamson and William Lane Craig on the existence of God.  Williamson argued that the concept of God is incoherent.  He claimed omniscience would require that God possess all empirical knowledge (experiential, know-how), and yet God clearly does not know what it is like to play basketball, ride a bike, or sin.  Craig responded that the classical definition of omniscience holds that God knows all true propositions, not that He knows all experiences.  Williamson counters that theists have so defined omniscience only to escape the logical absurdities involved in a being who is truly omniscient.  So is the classical definition ad hoc as Williamson claims?  No.  There is good reason to limit omniscience to propositional knowledge.

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