Eric, best known for his work in the free software / open source movement, is also responsible for developing C-INTERCAL in 1990, a critical moment for esolangs, from the 70s language INTERCAL, perhaps the very first esolang| esoteric.codes
Before brainfuck and Befunge, there was INTERCAL. Don Woods discusses the creation of this pioneering esolang and how he looks at geek culture today.| esoteric.codes
UPDATE: Hacker News discussion on this post, 01 June 2025| esoteric.codes