So what would the equivalent be for building lessons? What would it look like if a few dozen people (like, I dunno, some Carpentries instructors) each took a turn adding one page to an ever-growing lesson. They would each be able to see all the previous work—I imagine the project would have a blog feed, so contributors and interested parties would get a daily update on what had been added—but when their turn came, each person would be free to decide what needed explaining next.
I think it would be a lot of fun, but my tastes are somewhat eccentric. If you’d be interested, or can think of a variation that would make this more fun or more productive, please give me a shout—I’d be happy to coordinate. (I apologize for not allowing discussion here: following my criticism of Shopify’s continued support for white nationalist sites, it seemed best to disable comments on this blog until the trolls turned their attention elsewhere.)