"The Council of Scholars has said that we all know the things which exist and therefore the things which are not known by all do not exist." - Anthem

This is a rather extreme example of a very real world problem. This does not just apply the dystopian society that Equality lives in. A real world example is in today's media. We just get tiny little thirty second blurbs about even the most important news stories and then we are told that that is all there is to it. There is clearly more to all of these important world events that the public simply does not know. The difference is that in Equality's world, no one seems to know what else out there but in our world a select few know the truth actively keep it from the masses. The difference is the active verses deliberately inactive. The Council does not experiment or try new things and purposefully does not discover new inventions as a way to keep is people in line and suppress them. They are inactive to keep the people sedate. In our world information is kept from us and we are actively kept sedate. Just because something went unreported, does not mean it disappears from existence. Think of Watergate. The initial reporting of the break-in didn't even scratch the surface of all that was there. In that scenario the entire story did eventually come out but it begs the question, in how many other cases is the truth never fully revealed? There are truths that exist that are not known by all.