The Lisp in the Cellar

From a channel Lumen includes in full: The European Lisp Symposium posts its conference talks on Lisp, Scheme and Common Lisp language design, compilers and research, given by the researchers and implementers themselves.

A 40-minute video from European Lisp Symposium's catalogue; the title names its topic.

Video by European Lisp Symposium, played through YouTube's embedded player.