Human
"Ask a Human what they're good at and you'll get a shrug. Ask them to do something and they'll have a go. I've stopped deciding which of those is the more useful answer."
— Enclave research note, Starwrought Archive, author unknownHumans are the most widespread people in Calythera — and the only one with no ceiling built in.
No natural affinity for machinery, no inherited craft tradition, no biological adaptation to any environment. What Humans have is that nothing is closed to them — a foundry, a counting house, a coalition chamber, and they're not immediately out of place in any of them.
They learn what they need, do a passable job of most of it, and the sheer breadth of that is a thing no other race manages. Scars from long proximity to aether machinery mark the ones who've put in the years — no two patterns alike.
Scars
Branching scars along the forearms, throat, or jaw — not from injury, but from the body responding to long proximity to aether machinery. Each pattern is a personal history written on skin. No two are alike.