https://www.youtube.com/watch?v=D1sXuHnf_lo
Interview with an Emacs Enthusiast [Colorized]
https://www.youtube.com/watch?v=urcL86UpqZc
Writing an Emacs implementation in C (Gosling Emacs) | James Gosling and Lex Fridman
https://www.youtube.com/watch?v=wA7aB-oxjVc