I agree, common experiences can be used to say "you and I agree," but there is no way to say "this is true." Basically, it's fair to say that "we both agree that x exists" but not "x exists, and here's why," because that is only valid for you. Some people will agree on more things than others, but you can't tell them that. You can only speak for yourself.That's why I don't see what your point is. Are you talking as a (self-declared) solipsist?A subjectivist would argue that it's only possible to prove something to yourself, which really doesn't prove anything. Everybody is going to see the "truth" differently, which means that nothing can be proven for sure to exist or not exist. Really, it may not be the most elegant, but it serves to negate all of this debate about proving things.
(emphasis added)
As for subjectivism, I say there are COMMON EXPERIENCES that we can use to prove ("reasonably") that things exist or not. What are you saying?
A.
I hope that made an iota of sense.