Hermione stared at Harry.
She had become accustomed to Harry flipping the bird to wizarding customs and norms, but he had always stayed on the right side of what was actually possible (ignoring the "surviving the killing curse" thing). But now, here he was sitting in the library, reading, and listening to a Walk-man.
"Harry! How are you doing that? Muggle technology doesn't work in Hogwarts!"
"Well, that is clearly not true," responded Harry, rolling his eyes.
"Yes, but how did you accomplish it? Did you enchant the Walk-man to run on magic? Or maybe you managed to shield it, some how, from the ambient magic in the air?" Hermione was growing enthused by the implication that they could use this to introduce electronics to the Wizarding World. This could even be an oppertunity to make some real money!
"Hermione, where did you hear that technology doesn't work in Hogwarts?" Harry's question brought Hermione's daydream of heading a magitech company to a screeching halt.
"It says so in 'Hogwarts: A History.'" Hermione was starting to grow tired of telling everyone what that book said. Why won't anyone else just read it?
"And who wrote that book?"
'Oh, God. He's doing it again. Just condescendingly trying to walk me through his thought process to find some incredibly simple misconception that I've been working under.' Hermione held her sigh in and replied, "Wizards, I suppose."
"Would you agree that practically no-one born in the Wizarding World understands muggle technology?"
Hermione replied through gritted teeth, "Yes."
"In fact, the absolute extent of even the most learned Wizarding-raised magicians understanding of muggle technology is that it must be plugged into the wall to work, wouldn't you agree?" 'Oh, no.'
Hermione didn't answer; she was just too shocked by the implication.
"Behold, no wall plugs!" Harry exclaimed, "Your inferior muggle technology has been thwarted by our cleverness! Now, you will go through the most formative years of your development without any of the modern conveniences of the muggle world and will, therefor, learn to do without and be more likely to stay in the Wizarding World upon graduation!
"Although, I suppose it may not be so surprising that they might think that electronics just don't work without plugs. Battery powered, hand-held devices are quite a new technology, after all. Long lifespans don't lend themselves well with the rapid development of today's technology."
