 Good morning Hank it's Tuesday. Oh look it's Hank's book an absolutely remarkable thing which he wants you to know is available at fine bookstores everywhere. Has been since 2018. Hank today we're doing something called Mind Blowers with Hank and John where we share with each other the most mind-blowing facts that we know. Oh okay. Okay Hank here's my first fact. Pi calculated to the 38th digit is precise enough to calculate assuming that we knew all the other numbers the size of the Milky Way galaxy to within a few centimeters so like we only need to know Pi to the 38th digit but we know Pi to the 31 trillionth digit. That's not a fact about Pi it's a fact about humans. We're amazing. Yeah I can't get enough of us. I read a few years ago that there are probably fragments of dinosaur bone on the moon the asteroid that killed the dinosaurs probably shed debris as far as Jupiter. Another great mind-blowing fact is that some science communicators figured out that bananas were a really good system for the scale of radiation. How so? They have a little bit of radiation in them and so like eating one banana exposes you to some radiation so you want to know how much radiation you get like flying in a jet airplane to Europe. You can do it in bananas. Now I'm gonna have to google how many bananas an airplane flight is to find out if it was worth it to come here to visit you. Here's a mind-blower that Hank taught me before the Big Bang is an incorrect idea because in addition to creating space as we now understand it the Big Bang created time as we currently understand it? Yeah no absolutely. So me the mind-blowing fact is that you can look up into the sky with a telescope and see the Big Bang. Here's a great one. Henry Rice told me this if the universe were infinitely big and infinitely old the night sky would be white. Why? Because there would be light from all of the stars in every direction there would be no space not taken up by stars because the universe would be infinitely big and infinitely old. Okay Hank here's one that gets me for 99.99 percent of human history you could only hear music if you were within earshot of someone who was making it? Yes. And the idea of an album of recorded music is younger than Dr. Pepper. We do not know why there is matter. What? And we do not know like in two different ways. One we don't know why there wasn't an equal amount of antimatter and matter created and so everything annihilated itself. Like at the Big Bang it just like should have been like even Stephen at Big Bangs and then at Big Smoops. Well and then just like space and time continue to bang but matter does not. According to our understanding the universe a universe without matter is is just as likely if not more likely than a universe with matter and then like separately from that we don't know why matter exists at all. So we don't really know why I'm here. Oh definitely not. Okay well like on way more levels than just those two. Right like we don't know why I'm here in the sense that like we don't know why the atoms that are inside of me exist. Yeah it'd be interesting to look at what makes a fact mind-blowing. I think it's when it makes me feel either big or small when it recontextualizes my understanding of myself and the place in the universe. Yeah like I want to understand my own emotions because ultimately I am the most interesting part of the universe. I would argue that I am. It's weird. Do you not do you not wake up in the morning and your first thought is of me and my needs? Some days when it's a really bad day. Yeah I do think. Well we are on that little infinitely tiny speck. Yeah on the one hand it's that feeling of wonderful smallness where what you would think would be said but isn't but then on the other hand there's the feeling of like well there might not have been matter so in that sense I am quite something. This whole thing is weird. Thank you for coming to my TED talk Hank I'll continue to see you right now.