Van Til's Argument, Part I
Van Til utilized a "Transcendental Argument" for Christianity. In essence, he noted that in order for reasoning of any sort to be possible, God must exist and be its source. To argue that God is non-existent, Van Til inferred, was like constructing a logical argument for the nonexistence of logic. Such reasoning defeats itself. For the very thing being denied in the argument (e.g., logic) must exist in order to make the argument.
Thus, Van Til and his camp have relied on the claim that if any sort of reasoning can take place, God must exist to make this possible. God is the source of all things including the laws of logic and our thought life. Thus, the very fact that the atheist is reasoning demonstrates that God exists. Upon arguing, then, the atheist has conceded the reality of God.
Critics of Van Til's argument are myriad and include the Christian apologists working today: Craig, Moreland, Geisler, Habermas, etc.
From reading the critiques of these critics, I tend to agree that the Transcendental Argument as it has been interpreted by Vant Til's followers and his critics is fallacious. It simply posits that God is necessary for reasoning and leave it at that. The question is never answered as to WHY we should think that if God is nonexistent, then reasoning is impossible.
Of course, one could construct an argument that if God is nonexistent than logic and minds and thus reasoning won't exist. This has in fact been done with great success by scholars like Plantinga, Reppert, Quentin Smith and others. However, in taking this approach, one abandons the "presuppositionalist" school and opts for traditional argumentation in proving God's reality.
However, I'm not sure one must opt for the traditional route in this way. The controversy seems to lie with what the nontheist is willing to grant regarding the preconditions of argumentation. If one agrees that logic requires the reality of nonphysical laws of logic and that such laws must reside in a mind, then one in effect does seem to concede that a personal mind like God does exist. For humans discovered logic, they didn't invent it. Thus, there must be a mind outside of and prior to humans that holds these logical laws.
Thus, if the atheist concedes this much, then the apologists need not ARGUE that reasoning requires God. He merely has to point out to the nonbeliever that according to the nonbelievers own beliefs a God must be real. The atheist's very reasoning presupposes it. Thus, the "presuppositional" apologetic is back in full force.
But how can we make atheists agree to or see that they really do have these preconceptions about reasoning and logic? That's something I wish to explore in the next post.
