It's kind of ignorant to say "I won't believe it untill I see it." For instance, none of us have ever seen a 12 foot tall gorilla that walks on two legs like a man, but they've recently found skeletons and bones, that were thousands of years old, of these apes in the mountains of China, so there is proof that they existed. (Not @ Arukih) Plus if you beleive in the stories of the Bible, then you can't say "I won't beleive it unless I see it." because that would be hypocritical. I've never seen a rainbow, not even a photo of one, but I know that they exist.