"Why is my subject search for 'Gender expression' turning up so many titles on aerodynamics?" I was wondering just now, until I realized the most likely explanation was some catalog update process had done a pattern search-and-replace on "Drag" as a subject without checking the results.

(Seen in a HathiTrust subject search. Most likely not their fault, as they take records from partner libraries pretty much as they get them.)

@JMarkOckerbloom cue bans on aerodynamics books in 5, 4, 3, ...

TBH, I fully expect the current regime to make teaching the equal transit time theory (the obsolete and very wrong theory of how airfoils work) mandatory because they can

@scruss I was in fact trying to increase my coverage in subjects that were targeted for censorship in DoD-run libraries last year. Though this case inadvertently illustrates one of the increasingly frequent ways censorship happens these days: instead of blocking content outright, drown it out with noise so people don't find it who might otherwise.....