+But the "everyone present knew what I was doing was being a jerk" characterization seems to agree the the motivation was joking/trolling. _How_ did everyone present know? Because it's absurd to infer a _particular_ name from someone's appearance.
+
+It's true that there are name–feature correlations that people can pick up on. For example, a "Juan" is likely to be Latino, a "Gertrude" in the current year is [likely to be old](https://www.everything-birthday.com/name/f/Gertrude); a non-Hispanic white Juan or a young Gertrude may indeed be likely to provoke a "Doesn't look like an _X_" reaction (which may also be sensitive to even subtler features). But while probabilistic inferences from features to low _likelihood_ of a particular name are valid, an inference from features to a particular name is absolutely not, because the function of a name is to be an opaque "pointer" to a particular individual. A Latino family choosing a name for their male baby may be somewhat more likely to choose "Juan" than "Oliver" (or "Getrude"), but they could just as easily choose "Luis" or "Miguel" or "Alejandro" for the very same child, and there's no plausible physical mechanism by which a horrible teenager thirty years later could tell the difference.
+
+Thus, I reject the commenter's claim that "feels like lying" intuitions about pronouns and sex would have let her "keep calling him Bill, now righteously". What algorithm you would use to infer that someone's name is "Bill" or "Oliver" based on how they look? What are the "secondary Oliver characteristics", specifically? People for whom it was _actually true_ that names map to appearances the way pronouns map to sex, should not have trouble answering this question!