Karaoke graphics contain this inherent sense of duality. You could be singing about a song about unrequited love, when in the background, a troop of 3D rendered dancers materialize and start break dancing with smiles on their low-poly faces. The stock videography of nature and random landscape scenery is out of place but proves hard working as a backdrop for a wide range of MIDI tracks, from ballads to pop bangers.
Indeed, the envisioning of Wikipedia as the sum of all human knowledge is an historical continuation of
earlier encyclopedias that set up a particular relationship between the expert and the layperson, the non-expert, or the learner, as the receivers of knowledge.
The very definition of the encyclopedia is that it is comprehensive ‒ that it holds a summary of all information from either all branches of knowledge or a particular branch.
That encyclopedias describe themselves as representing all that is known reflects a particular understanding of knowledge that implicitly rejects the idea that some knowledge cannot (and perhaps should not) be known to all.