(October 19, 2022 at 1:49 pm)Tomato Wrote: This cone thing is something I don't understand, but I imagine it's a scientific concept against an omniscient witchy deity as well as human woowoo psychics.
Remember that spacetime is the geometry of ALL point in space and through all time. A location in spacetime is called an event.
The past light cone of an event A is all those events B that can get to A by traveling at the speed of light or slower.
The future light cone of A is all those events B that A could get to by traveling at the speed of light or slower.
Both travels go forward in time.
The point is that since nothing can go faster than light, all causes of an event A have to be in the past light cone of A and all events for which A is a cause have to be in the future light cone of A.