If I was diagnosed with something that was fatal in the next couple of years, I can't imagine anything more terrifying. And so for me, we know a lot about technology and we know a lot about the world, but I think health is the one area where there's so much data, but it's chaotic and that it's still a big black box. So, understanding really what is going to make me healthy and what is going to allow me to live the longest life is definitely keeps me up.