"What do you need boy robes for?" inquires Madam Malkins.
"I'm sometimes a boy," the girl explains.
"What?"
"Look—"
"Okay but I'm guessing that's the same reason or like, linked to why it's not on the curriculum?" He shrugs. "I don't know."
"But then—how do you find things out? Like which spells work or potions or...?"
"… There are ways to develop spells but I think that's, uh, probably fifth-year or something, I'm not actually sure. And usually people who develop potions are potion masters?"
"It seems like it'd make more sense for it to be done systematically, rather than – I dunno, is that ad hoc?"
"If only potion masters and spell developers actually get taught it that seems like a bit of a waste."
"Feel free to put that on your list," comments Anthony. "It seems like it could be quite interesting."
"I wanna make all Slytherins stop hating muggleborns and that's social capital!"