Hussar
Legend
But D&D, and the genre it represents, aren't internally consistent except to a degree necessary to support suspension of disbelief, even by their own standards. They're just an abstraction, not an actuality
And this is very true.
Take the languages skills in 3e. Utterly abstract. And about as realistic as a cardboard hammer. The idea that you can master a language, including reading and writing so easily is silly.
However, from a game point of view, it works.
Where we draw the line will vary from person to person. Always.