Mailman Dan said:
How do you prove the existance of the sun to a blind man?
Pressuposition most of the time gets someone to commit logical fallacies, especially when one holds that preassumption to be true; the exceptions I would say would be when one holds the pressupositions as a hypothetical.
What you have here is the sun, a fact, trying to be proved to a blind person. Even though you can't show the sun visually to a blind person, you can't show anything else visually to a blind person as well. But when it comes to the sun which is a fact because we can see it, it is observable, we hold no preassumption of the sun. We can prove the sun exists to the blind person by taking him to a beach, have him step on a shaded area and ask him what he feels, then have him stand(without a shirt) out of the shaded area so he's under the exposure of sun light and then ask him how does he feel. Then describe to him that the sun emits light, and light particles are hitting his skin this very momment.... to demonstrate any other object, you can just hand it to the blind person and have him touch the object, that would be some evidence given that the object handed to him is an actual object that is trying to be proved.
Concerning the sun, or any other object which is observable, one does not hold a preassumption when trying to prove it to a blind person. But when it comes to god on the other hand, people have to pressume that he exists, you wouldn't be able to prove it to a blind person nor a person that is able to see because god or the spiritual is not observable. And since he's not observable, no one is able to see him, no one is able to detect the spiritual... one can only assume that one can detect the spiritual through the preassumption that a god exists. And since one experiences these assumptions, and these experiences are meaningful to them sentimentally, he/she will consider them as truths, but they are merely only subjective truths, not truths to reality. And at the end there is only a subconcious web of circular reasoning where assumptions are validating a pressumption which they are all depending on to begin with.
Dan~~~>can't get him to believe what he can't see
I am very skeptical for things that can't be seen and are not observable.
I know that you are as well, for example, you don't believe in Krishna, right? Odin? Zeus? Larry the Leprechaun?