Transcendental argument for the existence of God

The transcendental argument for the existence of God is an attempt to show that logic, science, ethics, and all the other good things in philosophy presuppose God's existence. That is, you can't make sense of them unless you stipulate that God exists.

Were the argument to be stated in syllogistic form, it would be blatantly question-begging, so perhaps it's more useful to view the 'argument' as a argumentative strategy. To wit, charge atheists with the task of finding the foundations of logic, science, and ethics. Show why all their proposed foundations aren't up to the task. Then bring in God as the only foundation still worth considering.

Of course, it's very unclear that a theistic foundation is any better off than any of the myriad naturalistic foundations we habitually partake of. Moreover, it's unclear why we should take any foundation seriously if it works only by wildly stipulating entities that enjoy no independent support. Foundations are too easy if we can simply mentally contrive a perfect foundation, no matter how outlandish, and then persuade ourselves to believe in it. I can resolve Cartesian doubts about sense reliability simply by stipulating that I have an infallible perceptual setup; but that's wishful thinking and I know it.