You can tell that this is true by the way David Louis delivers the information. something about his style of delivery is so refreshing and unpretentious. The fact that he says this is high on the "woo-woo" scale cracked me up, and the story was moving and very real.
I'd love to hear more of this material, even if I'm not 100% convinced. It's a great subject to think about, and one not often spoken of.