[tacticalogic]

Actually, steelmaking is a refinement of ironmaking in which impurities (primarily carbon) are greatly reduced.

Kind of a quibble, but they don't just reduce the carbon, they eliminate it and then add some back in.

[Kielbasa]

Kind of a quibble, but they don't just reduce the carbon, they eliminate it and then add some back in.

Maybe some modern mills can do that nowadays,
but there's no way they did it back in the Middle Ages.