[She does her best to ignore the fairies, even though their tittering deepens her blush ever so slightly.]

Oh, right. I keep forgetting that most places don't have sparks.

[Hmm, how to explain? It's a difficult thing to pin down.]

Where I come from, 'spark' is the term for a particularly gifted scientist or artist. Someone who can create things that, um, go beyond the normal boundaries of what should be possible. In my world, whether you have the spark or not is a pretty big deal.