No one can prove that reality is real.
Yes, solipsism is pretty pointless once you get past the age of 14, but technically, we can't conclusively prove that reality is real.
Christians believe that Renee Descartes solved this with his "I think, therefore I am" essay. Pardon my gross oversimplification, but his argument boils down to this:
- Everyone believes in god.
- Therefore, god is real.
- God would never lie to us.
- Therefore, reality is definitely, totally real
The others aren't any better.
William Lane Craig probably uses something similar, but his argument for the existence of god is much, much worse. His Kalam argument is so awful that he's been reduced to trying to
disprove relativity with a syllogism. That is honestly one of the most eye-gougingly stupid arguments I've ever heard a theist make.
Even Ray "banana man" Comfort knows enough about why things are true in science to lie about the evidence, but only Craig is dumb enough to believe that the evidence doesn't matter.
Of course, he also has other proofs for God. Such as "Golly, I don't understand why some decisions are moral and others are immoral[ent]hellip[/ent]
therefore magic!!!!!"
In this line of argument, he has been reduced to arguing that it is moral when god orders an entire city slaughtered[ent]mdash[/ent]even the babie[ent]mdash[/ent] but if you order the same thing, that would be highly immoral. By the way, his argument is that the existence of absolute morality proves god, yet in order to support his argument, he has to make an absolute mockery of absolute morality with the most extreme form of moral relativism I've ever heard of.
And yes, there are specific forms of solipsism such as the Holographic Principle from physics, or the suggestion that the universe is an elaborate computer simulation running on some alien computer. There are people who claim to be able to refute that, but even if they can, they only refute those specific versions of solipsism.
We can't say for certain whether reality is real.
Most of us operate under the assumption that reality is real.
The fact that we can't prove reality is real is one of the reasons we can't say we know anything for certain.
Other than that, who above the age of 14 gives a fuck about whether or not reality is real?
Even if this is all a simulation, I'm still stuck in this simulation and I'm stuck living by the rules of this simulated reality. I honestly couldn't give a flying fuck if reality is real or not.