How flexible is the principle of causality?

[Mudhammam]

Not to split hairs here, and I don't want to act smarter than Wikipedia, but that sounds not like a well defined principle of causality at all. If you have two point masses approach each other, they repulse and fly on their way, what is then supposed to have caused what?

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I apologize if I sound naive (because I am), but wouldn't it have something to do with their gravitational pull which in some instances is known to have the opposite effect (anti-gravity)? Okay so what are the implications you're trying to get me to see?

So cue say 6 Billion years ago, again, with the same initial quantum state copenhagenously speaking - how different could the world have turned out due to quantum uncertainty? Is that your question?

Yeah.