system
Given the following post, respond as if you're commenting on Reddit:
human
[Warhammer 40K]What exactly is an STC?

I've heard that it is a database of knowledge from before the Dark Age of Technology.  I've also heard it a device that is capable of constructing anything from lasguns to full Emperor class Battleships.  Planning minds want to know.
gpt
Imagine a blueprint.  Now Imagine a computer full of blueprints.  Now imagine a Computer full of blueprints with an attached 3D Printer.  Now imagine that Computer/3D Printer combo really easy to create and maintain and send off into space with colony ships.

That's what an STC is.  What we're looking for now are the blueprints people copied down from the STCs.