white knowledge
n.— «He continued, slowly, by a process of osmosis and white knowledge (which is like white noise, only more useful), to comprehend the city, a process that accelerated when he realized that the actual City of London itself was no bigger than a square mile.» —by Neil Gaiman Neverwhere July 1, 1997. (source: Double-Tongued Dictionary)
Further reading
Twice a day the River Thames recedes, revealing a muddy shoreline. Hobbyists known as mudlarks stroll the surface searching for objects that have found their way into the river over the centuries, everything from ancient Roman jewelry to modern...
What if, instead of being an inanimate object, a dictionary were alive? That’s the idea behind a lavishly illustrated new children’s book called The Dictionary Story (Bookshop|Amazon) by Oliver Jeffers and Sam Winston. This is part of a...