Presumably most people would agree that there are people who are confused about their sexuality.
"Confused about their sexuality" is a particularly uncharitable characterization of a transgender person. Many are not confused, rather absolutely certain. Unless you're using the term "confused" as a polite way of indicating that you believe such a person to be mistaken or delusional, in which case you would be begging the question.
By the way, gender is not the same thing as sexuality.
It would only be a counterexample to that model if the student was correct, but whether or not the student is correct is precisely what we are discussing.
If one models gender as a boolean switch that can be set to either "male" or "female", and encounters an individual who has a combination of "male" and "female" characteristics, their model may not accommodate the new observation. I have watched people (who I previously considered fairly sane) break into a yelling fit when confronted with someone undergoing a gender transition, demanding to know their "real" gender and hurling insults when the response was not what they expected.
If one models gender as a boolean switch that can be set to either "male" or "female", and encounters an individual who has a combination of "male" and "female" characteristics, their model may not accommodate the new observation.
So did the person have a Y chromosome or not?
This thread is for asking any questions that might seem obvious, tangential, silly or what-have-you. Don't be shy, everyone has holes in their knowledge, though the fewer and the smaller we can make them, the better.
Please be respectful of other people's admitting ignorance and don't mock them for it, as they're doing a noble thing.
To any future monthly posters of SQ threads, please remember to add the "stupid_questions" tag.