Vihart

Pi is taking an hour from us! Let's get mad, then maybe drift off to soothing music to give ourselves that hour back. Thank you to this tweet by @darrenglass and via @tweetsauce which not only reminded me that Pi Day was coming up and I should probably make a video, but from which I 100% stole the title and intro: https://twitter.com/darrenglass/status/1367978449864974337 This video is sponsored by Patreon Patrons like you! Special thanks to Ray Sidney, Pat Devlin, David Perryman, Andew Romaner, Andrea Bi Biagio, Jodi Vezzetti, Yana Chernobilsky, and David Smith, plus an extra thanks from my piano to Caleb Wright. More thanks are here: http://vihart.com/thanks/ Happy Pi Day, everyone. I know it's been not just a long while but also a weird while, and I'm glad to see you're still here with me.

I saw a shape in a poster, and the rest could not be helped. Want to make your own BTS Octahedron? http://vihart.com/bts/ Also see vihart.com/bts for more info, links, and original files that you can edit, translate, and reuse however you want. This work is sponsored by Patreon Patrons like you! Special thanks to Ray Sidney, Pat Devlin, David Perryman, Andew Romaner, Andrea Bi Biagio, Jodi Vezzetti, Yana Chernobilsky, David Smith, and Caleb Wright. For more paper octahedron fun, this intermediate origami octahedron by Jeremy Schafer is just wonderful: https://www.youtube.com/watch?v=rc5EGPo4Op0 One of the playing card constructions is "6 Card Ball" by Andrea Hawksley, she has DIY instructions here: http://blog.andreahawksley.com/six-card-ball/ The 12 card construction is by George Hart and has instructions here: http://georgehart.com/g4g10/  Also seen are a set of Skew Dice by Henry Segerman, as featured in this Numberphile video: https://www.youtube.com/watch?v=uAnCL3vhVIs You may see a peek of a set of 4 truncated octahedra with one for each member of the Beatles. These came from the brilliant mind of an artist on Etsy named Tess, though she no longer seems to have a shop or a public-facing web presence. Tess, if you see this please please tell me WHAT WAS GOING THROUGH YOUR MIND WHEN YOU DECIDED BEATLES TRUNCATED OCTAHEDRA WERE A THING THAT NEEDED TO EXIST. Because you were right. So right. You give me faith that BTS Octahedra need to exist too.

This video is... itself. Good job, video! This work is sponsored by Patreon Patrons like you! Particular thanks to Ray Sidney, Pat Devlin, David Perryman, Andew Romaner, Andrea Bi Biagio, Jodi Vezzetti, Yana Chernobilsky, David Smith, Alan Boulton, Nancy Blachman, and Caleb Wright. Want to make your own BTS Octahedron? http://vihart.com/bts/ has lots of files and links. Also see the previous video: https://www.youtube.com/watch?v=YPKUbfIrlL8 If you want to attempt to make the thing at the end of this video (spoilers) you can, but I must say I don’t recommend it to those without a lot of experience with these kinds of things. I know some of you out there who will definitely go ahead and make it even without a pattern because these things are in your nature too (you know who you are), so to make your lives easier, here: http://vihart.com/wp-content/uploads/2021/09/twelve-threads-octahedron.pdf Chapters: 00:00 Beginning 00:27 Dice: Wrong About Numbering? 01:58 Comments: COPPA 03:51 Symmetry: Having IDEAS 05:20 Dice 2: Is My Octahedron Wrong? 10:50 Comments 2: Clickocracy 12:44 Symmetry 2: Failure. 15:55 Dice 3: MORE DATA 24:43 Comments 3: “Influencer” 26:45 Symmetry 3: Stubborn Failure 28:15 Comments 4: Comfort with Not Knowing 29:27 Symmetry 4: Wrapping Up 31:19 Dice 4: ?? 36:04 End