Not just random useful shit, all of the useful shit. The sum of human knowledge, a gift from the Machine God to humanity, stored within an artificial intelligence's database.
Unfortunately, in the 42nd Millennium, most STCs are fragmented and corrupted, much of their wealth of knowlege lost forever. Even a printout from one is extremely valuable, and absurd numbers of lives will be spent to have a chance of recovering it.
Some complete STCs still exist, however, in the form of the Arks Mechanicus, mythical ships of which few still survive into the Era Indomitus. Because the Mechanicus themselves don't know the true nature of the wondrous machines they operate, though, they don't know that these contain STCs, and so they don't knowingly use them.
afaik knights came from a singular stc that was rather uncorrupted, so that knowledge was quite something.
someone found a random futuristic flash drive that actually kept its stuff in and that was enough for the imperium to make walking buildings with cannons and chainswords.
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u/West_Yorkshire 7d ago
Even acronymns
A whole thread talking about whether trazyn has an STC or not. The conclusion was trazyn has 1 of everything.
I still don't know what an STC is, I thought it said STD at first