Thompson and Ritchie were among the first to realize that hardware and compiler technology had become good enough that an entire operating system could be written in C and by 1978 the whole environment had been successfully ported to several machines of different types.
I grew up on the crime stuff. Spillane Chandler Jim Thompson and noir movies like Fuller Orson Welles Fritz Lang. When I first showed up in New York to write comics back in the late 1970s I came with a bunch of crime stories but everybody just wanted men in tights.