Example: The Problem of Evil
An easy way to show that something does not exist is to provide a definition then show how that definition is not in keeping with reality. Many of the objections to God's existence by atheists come in this form. Here is a common example:
- There is obviously evil in this world.
- God would not allow evil to exist.
- Therefore, God does not exist.
An atheist who raises this objection has defined "God" as a supreme being who would not allow evil to exist and is obtaining his conclusion based on that definition. The problem is that most theists would agree that this "God" defined by the atheist does not exist! The atheist is quite rational with his conclusion, based on his definition of "God". This would throw off many who hold this definition of "God", especially when the theist concedes the conclusion but follows up with, "...but that's not the God I'm defending."