Sperber is an amazing speaker and fantastic programmer. This is a great talk. He'll be talking about similar things at Racketfest, the Racket conference I'm cur

Sperber is an amazing speaker and fantastic programmer. This is a great talk. He'll be talking about similar things at Racketfest, the Racket conference I'm currently organizing (https://racketfest.com https://racketfest.com). The idea is to build on what are called design recipes, a brilliant idea (or family/scheme of ideas) developed by core Racket guys (see their How to Design Programs [https://htdp.org] https://htdp.org]).