Annotators are warned repeatedly not to tell anyone about their jobs, not even their friends and co-workers, but corporate aliases, project code names, and, crucially, the extreme division of labor ensure they don’t have enough information about them to talk even if they wanted to
I find this interesting that they can't even tell friends about what their job includes. I guess if you are involved in billon dollar companies you can't give any information that could be told to a competitor.