"Yeah!" Tony still finds magic baffling and often frustrating, and he'd rather be talking about his tech, but if she wants to hear about what he's been doing with sigils he will gladly comply.

"He has me doing maintenance on a lot of his hybrid appliances, and that's what I'm building on. There wasn't a much he could tell me about the underlying mechanics of the sigils, but they have to exist, right? So I'm trying to figure out how the sigils relate to laws of physics that I'm familiar with. What kinds of energy they can generate, how their output can be modulated, what conditions they operate under, how long they last, how to integrate them into traditional mechanical and electrical systems, that sort of thing. Like, it's really easy to draw a sigil for light, so why isn't there an equally simple one to generate electrical current? And if there's a sigil for visible light, can you draw sigils that will generate other kinds of electromagnetic radiation? I mean, the big question is: where does the energy come from in the first place? Anton says he doesn't know, but it can't be infinite, or it'd break the laws of thermodynamics - and magic still has to follow some of the fundamental laws of physics, or else it would drastically change the nature of the universe. So it's got to be some kind of renewable energy source. But where and what is it? How do the sigils access it? How does it regenerate? And if it can be accessed with magic, there must be a way to access it with technology, too. Anyway, I don't know if I'll ever figure that out, but I've got a lot of raw data from my experiments, so I at least have a little bit of groundwork for some basic, practical applications."

You've got him started, China. Now good luck getting him to stop.