The Kalam Cosmological Argument

[Pat Mustard]

Omnipotence, to plantinga, is the ability to do anything that is possible.  Similarly, his definition of omniscience is knowing everything that can be known.  Thus, in plantingas view, there are things that gods cant do or know.

It's not clear why being able to do any possible thing would make it impossible to know any thing that could be known, or vv.

Because knowing everything would mean knowing every future event, thus reducing that beings choice down to one single action for every event in the future. Therefore that being cannot be all powerful because it doesn't have the power to change its actions in the face of its future knowledge. In a similar way being all powerful will constrain knowledge of the future because the being possessing all power cannot be constrained into one choice of action.