I started writing a new draft titled "Swine in a Line" (a small piece of the picture that relates chip-firing to number representation systems) and would love to get your feedback. I plan on publishing it on Monday. Sorry for the shortness of notice. (Making the last two Barefoot Math videos took longer than I thought on account of equipment problems plus my being in England on holiday for over a week.) In addition to seeking the usual suggestions for how to make things clearer and livelier, I'm also seeking good links to good short web-pages on sandpiles and chip-firing that are in the same spirit as this article and aimed at the same readership. (I'm not planning to include a link to my Notices article with Levine on sandpiles; aside from it being too technical, it veers too much in the direction of fractal patterns, and although I touch on this indirectly via the Numerphile video, that's not really what I want to focus on here.) Please leave your feedback here: https://mathenchant.wordpress.com?p=1784&shareadraft=59690647cdd0e (keeping in mind that if you don't sign your comment I won't know who you, with the consequence that I won't be able to ask follow-up questions that your comments may elicit). Title: Swine in a Line Beginning: Last month I launched a new venture similar to my Mathematical Enchantments blog: a YouTube channel I'm calling Barefoot Math. The first few videos are about a game I invented that I call Swine in a Line. It's a game with an easy-to-describe but not-so-easy-to-find winning strategy, and the challeng... Read more: https://mathenchant.wordpress.com?p=1784&shareadraft=59690647cdd0e Thanks, Jim