Mother hugs daughter, and daughter hugs back, and daughter steps into the train and goes looking for a compartment.
"We've got a couple family ones, but thank you. I'll probably write every day, might wear ours out."
"Ravenclaw was that not immediately obvious?"
"It's the best house. Knowledge is the future - did you know that my dad built this train -"
"He's brilliant," he says proudly.
"It is a very impressive engineering project."
"He's done cooler stuff. And is working on even cooler stuff, there's lots of places you can go with integrating magic and technology - and he told me when he was my age he wanted to remake the Philosopher's Stone and I said 'wait, why don't you anymore' and he said 'who says I don't still?' and I think he might be able to do it -"
"Yes, it would. But the train's useful, the proof-of-concept's useful, rails might be more efficient for infrastructure than Portkeying things, someday..."
"Okay." He shrugs. "That's logistics; Dad didn't do that part."
"We could have a rail network that didn't go near the Muggle ones. Or we could just lift the statute and work with 'em or something."
"Aaron's big on that."
"Lifting the statute. Gains from trade and everything. You don't have to think people are your equals to have positive-sum interactions with them."