There are enough rules that I'd say it still qualify as knowledge work (not as much as developer, but still some level of knowledge):

-Public (https://www.facebook.com/communitystandards) and private guidelines

- A "Known Question" document (15k words)

- Facebook internal Workplace, with real-time (and sometime contradictory) decisions, for breaking news events

from https://www.theverge.com/2019/2/25/18229714/cognizant-facebo...