FourOh-LLC (npub1drg…7yxw) they dont know.
Take sysadmins.
Most know Windows. Maybe they heard of Linux. BSD is esoteric. If you show them Plan9 they shut down. BeOS which could play 8 PAL-videos at the same time in the 2000s was a "exception", here, enjoy DivX@320p.
85 is about right considering usage of programming languages and platforms.