"Lots of different things to see if there's any differences in the mana! But for now-" She grabs a sheet of paper. "This. The temporary kind first, then the permanent kind."

"Do you care what kind of enchantment I put on it? You just want to see it happen, right?"

Behold a sheet of paper that can't be torn. Temporarily. Just until Valanda stops concentrating on it.

"No change. Surprisingly, that's what I expected!"

Purah has a lot of other experiments to do on this. She shoves aside a whole tableful of notes on some other project and calls her assistant, a middle-aged guy named Symin, to come take notes while continuing to ask Valanda to do various bits of magic.

And if she wants him to cooperate with that she'll have to answer his questions. He has so many. How does the slate work, what are the most useful Sheikah artifacts, does Sheikah tech use electricity, what's the fire for...

"Not that I mind explaining things but going question-for-question is distracting! Can you save them up in batches?"

"Sure, batches work fine!"

He cooperates with various experiments for a while.

Purah explains Sheikah tech! So much of it is lost and so much else they don't understand that well! Sheikah tech doesn't use electricity. The Sheikah Slate is incredibly complex and they can't get a super clear look but works on the basic principle of conditional-switching mana conduits. The fire is (probably) a self-sustaining mana tap drawing up the stuff from deep underground!

"Are you worried about running out of underground mana?"

"Snap! We found scraps of Sheikah books that made references to managing that! It sort of trickles back, and shouldn't be a problem unless we were running ten thousand mana furnaces for decades. I'd need to study it more to get a definite answer, and I'd need any research budget at all to think about doing that."

"It's not completely impossible we might be able to get you a research budget and arbitrary books from that era..."

"Books! How! The budget can wait if you can get undamaged Sheikah-era books!"

"I'm not sure if it's wise to talk about it where someone could overhear. There's no guessing when I'll get the chance to get some but I expect to within the year. It could be while I'm here and you'd be just up the hill. It could be anywhere else and getting you to where you'd need to be to read them would take days. If it's the first thing we'll just go get you. If it's the second and I have to defend a... way out of this universe... for days by myself I want something for my trouble."

"Not wise to talk about- Did my sister put you up to that nonsense idea? It sounds like something she'd do! Discussion is almost always good! Tell me tell me tellmetellmetellme!!"

Symin nervously interrupts Purah, "Ah, perhaps I should go get young Link?"

"Impa was worried about Ganon finding out. Hylia doesn't seem worried about it, I'm just playing it safe. You can ask Link if she's willing to take more risks with the information."

Purah bolts out the back door.

And then back in, Link following and yawning. "Jus' tell her. Even if Ganon does figure out Milliways, Security will be able to take him. Apparently. Sorry I didn't remember that sooner."

"I'd like to see what kind of security can take Ganon. But sure. Purah, at random a door might decide to lead to a magic bar in another universe that sells all the books ever published in every universe."

!!!

"I wanna visit. At random? You can't have many data points yet, can you?"

Now her barrage of questions is about Milliways, not Valanda's magic system.

"No but we've also asked around inside and don't know how to predict it. It seems to favor some people more than others but we've heard that some people get just one door in their lives. But for all I know that might not be true. I don't know why it favors some people and I don't know any ways to predict if it'll like you. It has weird magic and you'd have fun there if it let you in."

"I want to write down a list of book requests and give it to Link now. It'll be a snap! Since it seems to like you two more than me and all, you've been there before."

She fetches a fresh piece of paper and starts on that, muttering book names.

"Are those names of books? How do you know what books they had back then?"

"We have some books, which contain references to some other books sometimes! And it's not just book names... Hmm, Meto Kaven's work is a bit weird should I include him..." Back to writing.

This seems to be taking a while. Maybe he'll just go for a walk while they wait. He opens the front door. It doesn't open on Hateno.

"Found it!"

"That's some kind of crazy luck," Link comments, laughing as Purah grabs a bunch of notes and a mask-thing before running into Milliways.

He holds the door for Link and Symin if they're coming.

"I bet we can get Purah to do the book-copying for us!"

"I bet she does all her own book-copying!"

Symin follows through, too, looking around curiously.