Sunday, 30 December 2007

A father's foreknowledge

During a discussion on Jamsco's blog, Bnonn was suggesting that if God's knowledge is contingent on our actions then God cannot know about what we will never do.
  • P1. If human beings have libertarian free will, and God has definite knowledge of human actions, then it is necessary that God’s knowledge of those actions is logically contingent upon them.
  • P2. If God’s definite knowledge of human actions is logically contingent upon them, then God cannot have definite knowledge of human actions which will never occur.
  • P3. But God does have definite knowledge of human actions which will never occur.
  • C4. Therefore, human beings do not have libertarian free will.
I have previously said that while reasoning is good it is also fallen, so if our logic contradicts Scripture then we must check our premises or reasoning. I think the error is logic is related to the first premise. While reviewing the premises is useful, illustrations are also useful because if the illustration is feasible, then the argument probably needs modifying. This is an example from my daughters.
  • Bethyada: D1, for your snack you can have blue cheese on crackers or avocado on crackers.
  • D1: I'll have x.
I offered her this (a factual) and I knew her response would be x. I knew her response prior to the answer. My knowledge is not so much contingent on her actual choice, rather it is contingent on me knowing what her choice will be. But her choice is clearly hers and not mine.
  • Bethyada: D2, for your snack you can have blue cheese on crackers or avocado on crackers.
  • D2: I'll have y.
Now this is a hypothetical (counterfactual), I don't really do this, it is just a mind experiment. But I am still certain of her response. Clearly my knowledge here is not contingent on her choosing.

Note the answer is different for each of them given the same choice. It is not that I am forcing the answer I wish to have (do you want to eat a chocolate bar or a slug).

The reason I know the answers is because I know my daughters.

I would rephrase premise 1
  • P1. If human beings have (libertarian) freewill, and God has definite (fore)knowledge of human actions, then it is necessary that God’s knowledge of those actions is logically dependent on God knowing what humans will do.
God knows us better than I know my children so God always knows what our choice will or would be.

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