text:  and what you'd like to learn about in that later series. Our address is radio at Freakonomics.com. Also, feel free to tell your friends and family to listen to Freakonomics Radio. That is a great way to support the shows you love. That's it for today's episode. We will be back next week. Until then, take care of yourself. And if you can, someone else too. Do you have a favorite love song? Is it upbeat?