For the 6th time: the evidence the blind man can accept comes in the success of the scientific theories in predicting events around him. So, when a blind man is told that there is a sunset in the sky, and he can reconcile this with all of the scientific knowledge we have on the universe, this is taken as evidence, ans the on-existence of the sunset would contradict all of our knowledge. that is "proof", just as any proof by contradiction is proof.
The blind man also accepts that, when he drops a feather, it hits the ground, despite not seeing it do so. in fact, this is another area where your analogy is very, very weak: we can ALL be considered "the blind man" at times. When an artillery shell is shot up in the air on the other side of the world, and you have learned about gravity and ballistic paths and the shell's exit velocity in a science class... would you be more likely to believe that the shell will eventually fall, or that it will just continue in a straight line , forever, into space? Remember, you're the blind man... never seen an artillery shell fired, not once...
You, OF COURSE, would agree that the shell would fall back to earth, because you take the success of our theories as evidence of the truth of their predictions. period. There is NO argument to be had, there. the blind man sitting next to you would make the EXACT same determination.
And AGAIN, for the umpteenth time, I ask you to answer why a blind man would obviously be more willing to accept the existence of a sunset than he would a pink dragon, breathing rainbows, flying across the sky. By the way, it's very impolite to keep sidestepping my questions, after repeatedly asking questions which I directly answer. You don't seem like an impolite person... maybe there is another reason you are ignoring my question that is causing you to behave impolitely...