Plantinga: God and Other Minds

And so begins Plantinga’s project. Plantinga evaluates the issue of whether we are rationally *justified* in believing in God. In doing so, he considers the natural theologian’s arsenal, the atheologian’s response, and whether belief in God can be salvaged from the analogy of other minds.

Natural Theology

In considering the Cosmological, Ontological, and Teleological arguments, Plantinga points out that most criticisms of these arguments do not obtain, but still, at the end of the day, the natural theologian is not in a better position. Admittedly, this section is dizzying. The ontological argument comprised two chapters (though we did get a fine survey of the then-current literature).

Various Atheologica

Plantinga explores the atheologian’s criticisms of theism: the problem of evil (PE), the free will(FV) defense, and verificationism (Vf). With regard to PE, Plantinga notes if the atheologian’s premises are correct, it still doesn’t prove that God doesn’t exist. There is no logical contradiction between the classical theistic view of God and the existence of evil. The atheologian needs to add the following premise:

(a) An all-powerful, all-loving God is *morally obligated* to create a world where persons freely choose the good at all times.

But introducing moral considerations is off-limits for the atheologian at this time. In any case, the atheologian’s criticism only speaks of what kind of God exists, not that he doesn’t exist.

Plantinga’s FW defense is the best chapter in the book. Whether we hold to free will or not is true, Plantinga argues that it is logically coherent and thus serves to defeat the atheologian’s defeater. The atheologian wants the following premise:

(b) God could create a world where the state of affairs obtain where a person P freely chooses the good at all times.

As Plantinga notes, this is hard to square with any definition of freedom. Further, just because God is omnipotent does not mean that he can create any state of affairs (e.g., God cannot create the state of affairs that is not created by God!) Further, Plantinga gives a nice discussion of what is a human person:

(c) x is a possible person = def. x is a consistent set of H properties such that for every H property P, either P or P (complement) is a member of x (Plantinga 141).

And if it is false that God can instantiate any possible state of affairs he chooses, then it is false that he can create any person he chooses. Therefore, (b) is no threat to theism.

God and Other Minds

This last section was confusing. Plantinga argued that the other minds analogy has drawbacks but then suggests something like it to *justify* belief in God.  It’s important to note that at this point in his career, Plantinga is still speaking in terms of justification and has not yet moved to warrant.

Evaluation and Limitations

This book was one of Plantinga’s earlier projects. Notice that I have been using the word “justify” in terms of evaluating belief in God. By the time of Warrant and Proper Function, Plantinga has rejected this line of thought. Justification is a stricter criterion of rationality. It suggests deontological duty and if Plantinga wants to speak of theistic belief as *justified* on the basis of other minds analogy, then his project certainly falls short. But this is no longer Plantinga’s position.

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