(11-13-2018, 09:51 AM)exodus Wrote:(11-13-2018, 04:30 AM)Thumpalumpacus Wrote: That's pretty much what I mean. If we're talking about gravity, I can point to the effect and rest assured that your perceptions will mostly coincide with mine; we will see the same stuff fall. It is objective precisely because we all see gravity the same way.
If you have a good grasp of general relativity but I have a classical conception of it, no, we will perceive very different things. One of us perceives the curvature of spacetime, the other one perceives a force pulling the object down. Both of us are having an objective conception, because for both of us gravity is defined in terms of observable objects, but one us has a more accurate conception.
There's no such thing as down.
Defining Gravity (ft. Physics Girl & MALINDA) | A Capella Science
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