No, but can you say that we will never discover proof of his existance?
And where did I comapre airplanes to supernatural beings? What I'm comparing is the lack of knowledge we had then about aerodynamics could be analogous to our lack of knowledge about God now.
Don't worry, I'm not trying to convince anyone of anything. That's impossible ( truly

). My beliefs are mine and your beliefs are your's.
I just don't like to see people claim that just because the existance of God has not been proven, that means it never will. I'm not claiming that it will be proven, but the possibility is there. To claim otherwise is to undermine the scientific principles that have driven us to so many of our discoveries and inventions.