While the girl made the final touches on the last pipe for today, she turned around to her female mentor, who showed her how to build those pumps for the crude oil.

"Don't you think it's strange, to get knowledge, we didn't originally have in our own world?", the girl asked.

"Strange? Sure. But I don't see how that would violate any laws of physics.", her mentor answered.

Thoughtfully, the girl looked at the pump again, which by now had started working with a dampened buzz. While it was quite an industrial-sized pump, it was a pretty normal centrifugal oil pump. However, it shouldn't be here – in this world.

She asked again: "But shouldn't information never arise on its own, without any cause? 'Ex nihilo nihil fit', Nothing comes from nothing? And the law of causality? It just... shouldn't work."

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"Sure, those principles are true, and always will be. However, we are never breaking these laws of nature, we're just using them to our advantage. Tell me, which action do you think has not had a cause? Your sole purpose here is to become a professional worker, specialized in oil pumps. To build them, to inspect them and to repair them. It's your job, which you are learning from me; a professional, when it comes to pumps. And I have learned it from a mentor, who taught these things to me in an earlier iteration."

The girl didn't seem satisfied with this answer, but she had to accept the truth sooner or later...

"In this world, self-taught really gets another meaning.", she replied after a short pause. "I see where you're coming from and it obviously works. But I think I'll still need a few iterations, until I can really grasp what this means..."