 energy research, thinking about time. And, um, so, um, you know, if people have other questions, they can email me email about time. And it's, I talk about it in my book too. So if you had an opportunity to chat with Albert Einstein, what's one of the first questions you would ask him? That's a good question. Um, well, I know later on in his life that Einstein, even though he's famous for all the relativity stuff, he actually contributed a lot.