A great problem of the current world is assume that everything that is read is part of knowledge. In science we learn to shed arguments so that we can distinguish what is information from what is not. One way to distinguish a discourse that emits knowledge from another that emits beliefs is to pay special attention to the content: knowledge is data free of judgment. When a discourse contains personal opinions, judgments, emotional language, etc. we no longer talk about data but about beliefs and that is not knowledge. The current internet contains a high content of misinformation, opinions, judgments, false data, beliefs, misinterpretations ... with what seems to be information, it turns out to be a belief based on personal constructions that maybe start from something true but that they distort by reasoning errors, lack of knowledge in the matter, illusions, etc. The same goes for documentaries, books, etc. Really there is much "information" and it is not easy to distinguish what is knowledge and what is belief.
I loved reading "tons of useless books exist", it is proof that there are still people who do not believe everything they read ... :)
PS: I love the reason for the photography; D