Why you believe what you believe I

[Nurvingiel]

Originally Posted by brownjenkins

however

the point is that you can (as in, have the ability) to see the professor's brain... which is why we say it exists

such is not the case for "god" and "heaven"

try substituting "soul" for "brain"

the point is not whether you have seen something, but whether it is possible to see something

Well maybe it is possible to see heaven, and we just don't know about it. People say that Atlantis exists or existed on this physical world. We can see the whole physical world, and it is not there.
People say heaven exists, but not in the physical world. It is a logical belief that's impossible to prove IMO. Part of the belief is that only dead people can see heaven, so the living shouldn't be able to see heaven.