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There is no notion of causality in our laws of physics, and from all we know gravity could certainly be different, or absent. You could have a universe with just the other three forces.


There absolutely is. The speed of light is the speed of causality. It is very tightly integrated into the framework of modern physics.

Maybe you are confusing causality for the arrow of time?


Modern physics says little about causality. The fundamental laws are all field equations. Those set constraints about how the physical state of a system can evolve between two points in time, but there is no notion of causation, only of consistency or (im)possibility.

Causation in physics is a complex and problematic notion: https://plato.stanford.edu/entries/causation-physics/


I think we are talking past each other. Defining how the system evolves is defining how initial conditions must lead to (cause) intermediate and final states. That’s causality in the logical sense.

What I’m talking about is most similar to the “Causal Explanation” section at the end of the article you link.




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