Thank you very much.
I want to thank the presenters as well; it was extremely well done.
Cause and effect--that's really one of the big issues we're talking about here. We're trying to debate cause and trying to debate what the consequences of things are.
Mike, I'm going to give you an opportunity to redeem yourself in terms of talking about general scientific principle and objective scientific protocols. In a food chain, is it the top of the food chain that determines the bottom of the food chain, or the bottom of the food chain that determines the top of the food chain?