It turns out ElectricStrawberry cannot even prove that the world wasn't created yesterday.
The answer of Western philosophy at least since Descartes has been that we can trust the evidence of our senses because God does not deceive.
And how do we know that there is a God who does not deceive? Which cognitive faculties should we use to determine that there is a God who does not deceive, so that we can trust the deliverances of our cognitive faculties?
If you don't trust that explanation, I recommend that you ask [act?] as if it does
What started off as a bold assertion concerning what science can prove is reduced to a recommendation that we act as though science proves things.
-A8
I see you snipped the "favorite argument of college freshmen" part of my post, among many others. I think I've covered the basics. Feel free to re-read the parts you missed.
And how do we know that there is a God who does not deceive?
We don't. If God does not deceive, we can trust our senses. If there is no God and ours is a purely materialistic universe, we can trust our senses. If we are in a universe ruled by a capricious trickster god, we cannot trust anything, and live in perpetual uncertainty.
What started off as a bold assertion concerning what science can prove is reduced to a recommendation that we act as though science proves things.
I was recommending that, if you doubt the reality of the material universe, you not step in front of what appears to be a bus to test your hypothesis.
I hereby retract that recommendation.