On a more micro level, I find it very hard to write good documentation. I always forget something that once pointed out seems obvious. Or worse, the reader is missing some important context that many other readers are already privy to. Not to mention, some people don't even seek out docs before acting.

I imagine this gets amplified in a large org. The docs are lacking, people might not read them anyway, and you get an explosion of people who don't understand very much but still have a job to do.