What if you're wrong about the Great Juju at the bottom of the sea?

I love this video of Richard Dawkins owning a theist:



This speaks to one of the early questions that drove me away from Christianity. How can I know that my religion, I asked myself, is true, when there is just as much evidence for all the other religions (that is, none)? This is a very important question that religious people need to ask themselves if they are at all concerned about being intellectually honest.