What are you trying to achieve by allowing someone to see a fact, but not actively surfacing that information? Within the scope of X likes Y, X said Z, Faceboo

What are you trying to achieve by allowing someone to see a fact, but not actively surfacing that information? Within the scope of X likes Y, X said Z, Facebook has a very consistent and strong privacy model [1]. However, they have long considered anything that isn't a hard privacy violation of their rules to be fair game. Technically (and this is FB's engineering mindset showing through) not surfacing information is security through obscurity. It seems like they are backing away from that model, by deprecating features like Graph Search. I personally think that this is worse because it makes it much harder for people to understand what is visible to others. It muddies the rule of "if you don't want people to know something, don't put it on Facebook". [1] There are some messier areas, like People You May Know, or when platform apps are allowed to access (and store) all they data that a person who uses that app could see.