please tell me a cool fact, i need to stop thinking about oldboy

@bcrypt From the 1880s to the 1980s (when it was displaced by lithographic plate making), typesetting for press was commonly done with a machine that used a keyboard to drive the assembly of template molds (matrices) into assemblies that would then cast molten lead into slugs (lines of typeset text), combined and used to print pages.

https://en.wikipedia.org/wiki/Linotype_machine

Linotype machine - Wikipedia