I assume it's a Hitchhiker's Guide to the Galaxy reference. If so, that in-joke dates from 1978, making it only 8 or so years younger than when the "Unix" beca

I assume it's a Hitchhiker's Guide to the Galaxy reference. If so, that in-joke dates from 1978, making it only 8 or so years younger than when the "Unix" became the in-joke for the OS name.