No, C and Unix were not developed to improve global telephony. Part of the story is that Ken Thompson wanted to play a video game. This is documented in a num

No, C and Unix were not developed to improve global telephony. Part of the story is that Ken Thompson wanted to play a video game. This is documented in a number of places https://en.wikipedia.org/wiki/Space_Travel_(video_game) https://en.wikipedia.org/wiki/Space_Travel_(video_game) As a part of porting the game to the PDP-7, Thompson developed his own operating system, which later formed the core of the Unix operating system. Multics was closer to something "important", while Unix was something unimportant and a great example of the principle laid out in the article. Also, the first application of Unix beyond Bell Labs was typesetting. They were using it to produce patent applications, saving the labor of many secretaries. It was not used for telephony. C was co-evolved with Unix as portable language to write an OS in. --- edit: For some color on how Bell Labs related to the rest of the org, I recommend "The Idea Factory" by Gertner and Brian Kernighan's recent memoir on Unix.