Rather frustratingly (and mysteriously) the latest Numberphile video was not "delivered" to all our YouTube subscribers.
The video is a guest appearance by fellow YouTuber and number lover, ViHart.
She rolls a Yahtzee in her own inimitable style - using tetrahedral dice.
If you like the video and want to help us right this technological wrong, please share the video with your like-minded friends via email, Facebook, Twitter, Google-Plus or whatever else you use!?