"--Yes although off the top of my head I'm not sure how to explain why in layman's terms. It--involves science?"

"Well, we're way behind you on science."

"Yeah."

"We've barely invented anything. Apart from magic I think we correspond to like... Bronze Age."

"Huh. Well, glass shaped correctly bends light in ways that make it easier to see things."

"Cool."

"Lots of things do, actually, but glass is most convenient much of the time."

"I don't have to use physical glass to look around corners or at very small or distant things."

Nod. "Do you have mirrors?"

"Not glass ones."

"The seeing-around-corners thing is usually a mirror thing."

"Huh."

"I think glass ones work better than metal ones."

"What do you do to the glass to make it work that way?"

"Mm--something about silver behind it? So glass and metal together, technically, I suppose..."

"We have polished metal mirrors... I don't have enough Adamant to squish some metal and attach it to glass, unfortunately."

"It would probably make sense to look it up to see the details, first, I'm not really a good source on optics."

"Makes sense. I assume I shouldn't take apart the one in the bathroom."

"That would probably make the other guests annoyed with you. I can probably get you one to take apart if you want it."

"Thanks!"

"They're pretty ubiquitous! And it's not like we don't have money."

"I appreciate your willingness to deploy it to amuse my mirror-related curiosity."

"It may or may not lead to significant insights about your magic system!"

Giggle.

"You said something about hybrids, as I recall, how do those work?"