Originally posted by josephw
If there were not a creator God, would there be proof?
Can there be proof for something not existing?
Can there only be evidence for the existence of something, and not for something that does not exist?
It depends on what you mean by 'proof'. I know what it means in mathematics but it gets a bit vague when used anywhere else.
However, by any normal understanding of the word, it is perfectly possible to prove that some things do not exist. For example:
A block of solid Iron 20cm x 20cm situated in the center of your brain does not exist. Do you really need proof for that one? In fact, if an object is defined clearly enough and its definition contradicts what could be considered 'fact' then it constitutes proof of its non-existence.
Definition: There is a god named James who does not allow any person in the world to ever type on a computer.
Fact: I am typing on a computer.
Conclusion: James does not exist.
Often the dispute would be what is a 'fact'. For example I may make the following proof, but you would dispute the relevant fact:
Definition: Jesus was the son of God who rose from the dead after three days.
Fact: It is impossible for a human being to rise from the dead after three days.
Conclusion: Jesus does not exist.
If I can establish that the universe was created by some means other than a creator God, then I have essentially proved his non-existence. The question then would be whether or not you accept my creation claim as fact.
Some creationists define God as a being that created the earth not less than 10,000 years ago. If I establish as fact the existence of a rock on earth that is greater than 10,000 years old, I have proved the non-existence of their God. Which is I suppose why they refuse to accept the existence of such rocks and will go to great lengths to justify their denial.