I was passing through my Etymology dictionary and ran across aegis, which I’d known from the telco Aegis.

Aegis derives from ancient Greek, meaning the shield of Zeus. This was derived from the ancient Greek word meaning `goat` as Zeus’s shield was said to be made of goatskin. The word word for goat is `aìx` (aix with an accent over the i).

I wonder. Advanced Interactive Executive SOUNDS like one of those cheesy acronyms that someone picked words to fill in a pre-chosen acronym. Since it was based off of BSD Unix, and was an interactive (shell based) O/S versus the batch processing systems of the time, that easily filled in the I.

SO I actually support the Goat operating system.