They are from an illustration of how big wikipedia would be if it were printed in books like volumes of a typical encyclopedia. Unfortunately, it is misrepresented here, because they only show the equivalent of 4 bookshelves in this meme, when the original illustration was 17 shelves (about 4x what is pictured here). So basically, wikipedia would comfortably line the walls of an average-sized study. Source: WIKIPEDIA - Size in Volumes
Interestingly, the link I just shared would fall under the category “Lording it over Britannica” in OP’s meme.
They are from an illustration of how big wikipedia would be if it were printed in books like volumes of a typical encyclopedia. Unfortunately, it is misrepresented here, because they only show the equivalent of 4 bookshelves in this meme, when the original illustration was 17 shelves (about 4x what is pictured here). So basically, wikipedia would comfortably line the walls of an average-sized study. Source: WIKIPEDIA - Size in Volumes
Interestingly, the link I just shared would fall under the category “Lording it over Britannica” in OP’s meme.
That’s still comprehensible. I would’ve thought Wikipedia was bigger.