"So- Hrm, I don't have my notebook to sketch with but a steam core is a metal device about the size of a wagon and rather heavier. It contains a miniature furnace and electric and clockwork systems that can do simple mathematics. It has eight powerful actuators, sixteen inputs for sensors, and a variable but large number of memory rotors, and rows of switches and wire plugs. And a clock. The sensors tick signals on and off, and the switches and plugs do things like add two numbers, or check if one number is bigger than another. The memory rotors can be set to a number, one through six, and then read that number back later. Put it all together, if you line up the instructions right, you have a sort of extremely simple mind that follows simple instructions... As long as the sensors give the right numbers, and the memory rotors don't slip, and the machines attached to the actuators give the right result, and none of the switches got disconnected or damaged, and you didn't make a mistake setting it up. You usually want someone minding it in case it goes off the rails?"
"All of it, as far as I know, is mundane. Charles Babbage and Ada Lovelace partnered to develop the first Steam Cores, called Analytical Engines at the time, but that was decades ago and eventually they were understood enough that that could be made in a factory. There, each person or machine has one very simple job that they learn to do quickly and efficiently. One person takes bits of metal and uses a heavy press to flatten them out, then passes the discs on. Next person cuts a small hole near the side. Next person puts a bolt into that hole and attaches two pieces together. And so on. Engineers design and oversee the process, but ordinary people or dumb machines can do each individual step. I think there is a major steam core factory in Chicago, across the ocean, and one in London, capital of England. I recall reading a newspaper article saying that it produced over three dozen steam cores per day."
"I don't think any of it's religious? People curse or hit their machines, or swear they're malicious or only like one operator or won't work if you don't ask nicely, but that's superstition, not religion. I mean, I never managed to explain to the other orphans how I made the pressure cooker and they jokingly call it witchcraft... It didn't feel like magic or religious fervor, though? Even if I don't precisely recall the exact steps I took? You don't need to bless your engines with holy oil or have a priest say benedictions over them or anything. But maybe it does help. As for secret techniques, like, yes? They call it trade secrets- Something someone came up with that they want to earn money off without revealing how it works to everyone else."