https://www.youtube.com/watch?v=g3jOJfrOknA

National Inventors Hall of Fame - NIHF
Published on Feb 18, 2019
Bell Labs colleagues Ken Thompson and Dennis Ritchie developed UNIX,
a multi-tasking, multi-user operating system alternative to the batch
processing systems then dominating the computer industry.

Not sure why I hadn't seen this before :)

Cheers, Warren