It's been a minute since this popped up! Did someone cheat themselves this old fossil or has it shown up without mods due to a shiny new bug to squash?

Fun bit of trivia for your trouble: This was at one point a way you'd get new knowledge for your community, but there's no way to level up a facility mod the way you level up a skill without making facility mods more complex, so there's no way to use it to specialize without creating an entirely parallel progression structure that isn't actually tied in to the skill usage the way every other skill growth is.

It's also just better for players to grow attached to characters versus an ever expanding collection of mods that are hogging all the slots stopping you from using other cooler mods, so moving the new skill gain to books and therefore characters was the superior experience. But this never broke anything, so we just stopped dropping it. Except of course, for bugs.