"Unfortunately we don't know whether the teleporters we have access to can cross worlds, so this may be our only opportunity to trade with other planets. How long can we convince you to stay and continue making things?"

"I think I can stay maybe 4 hours? With a nap. Making potions too long tends to make you tired."

"I don't really know. Might become tired in 5 minutes, might become tired in 5 hours."

"If it's limited like that... Hm. Well, it'll still be a great help, of course."

"And the bar is a person! She can sell us books from the future. Well, so to speak, books from technologically advanced places. Pricey, but she can take from the base's account directly apparently."

"We are also more technologically advanced, so that's another way we could help."

"I do believe I'm <i>very</i> interested in technology. We have... Trains, basic vaccines, crude guns, compasses, mechanical clocks, natural gas lighting. Does that give you an idea of the kind of technology we might benefit from?"

"I'm not an expert in it, but I think after those it was telephones and airplanes? Those are useful, anyway, I suggest getting books on those. I can even explain airplanes a bit because I was interested in them for a while and I researched it."

"We won't have a use for airplanes, I suspect, but some of the design principles may still apply. Witches fly, and can lift fairly heavy loads while flying fairly quickly."

"No, I bet it can totally help. Show them how we went from brooms to the 'wings maybe, see if plane-shapes might do better."

"Airplanes are really big, though."

She draws an airfoil shape and a rough diagram of an airplane on a napkin and gives a brief explanation of it.

Amy judges that the correct amount of time has passed, and checks the mirror. It is charged.

"Hey guys! It worked!" she announces.