you are using the scenario
just say your argument is invalid because i have shown 2 counter points and you refuse to answers
The scenario is you KNOW someone with XY chromosome is going to enter a changing room with my sister/mother
You : "How do you know that someone have XY chromosome?"
I said, its literally a hypothethical question, its not relevant to know how do i know they have XY chromosome. The question is set in a scenario where you know they have XY chromosome
You : "Your argument is invalid"
And since when is a scenario is an argument LOL, its simply a setting of the event