Eugine_Nier comments on Natural Laws Are Descriptions, not Rules - Less Wrong

32 Post author: pragmatist 08 August 2012 04:27AM

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Comment author: Eugine_Nier 09 August 2012 11:41:21PM 0 points [-]

I wouldn't be able to answer using Newtonian gravity, I've never seen the theory explained (that I remember). I see more reading in my near future.

Then what makes you think you know enough to use GR for anything besides a fake explanation?

Comment author: Troshen 13 August 2012 08:39:36PM 0 points [-]

<scratches head> Maybe I don't.

I think I do. I think I have a general, summarized, understangin of how gravity works. I would say I have a starting point of knowledge, and If I ever need to get more specific to solve specific problems, I know where to go research the details, and then run experiements to solve a specific problem. Or to challege the Fake Explanations.

I'm not set on Relativity, for example, and I don't accept it as some kind of gospel. I love thories that try to poke holes in Reltivity. The day I posted this I read about several that tried and were demonstratably worse at predicting reality that Relitivity.

As far as I can tell my mental map of the universe works pretty well, but I'm ok to revise it if that turns out not to be true.

I'm putting this out there to clarify my understanding and get comments on it, so I accept your comment, but how would YOU phrase your answer to the question of how gravity works, in a better, non-Fake-Explanation way?

Or, alternatively, how would you rewrite my answer in a better, non-Fake-Explanation way?

Because if you mean that I need to send up my own Gravity Probe B to verify frame-dragging before I can help other students try to understand gravity, you're out of luck. I'm planning on trusting teir results. (although I have to admit to being a bit disappointed when they confirmed Einstein instead of challenging him! <grin>)

Comment author: Eugine_Nier 13 August 2012 10:24:52PM 0 points [-]

As far as I can tell my mental map of the universe works pretty well,

Do you regularly encounter situations where your map of GR is tested?

I'm putting this out there to clarify my understanding and get comments on it, so I accept your comment, but how would YOU phrase your answer to the question of how gravity works, in a better, non-Fake-Explanation way?

Or, alternatively, how would you rewrite my answer in a better, non-Fake-Explanation way?

Sure:

Question: "Where the frak does gravity get its power source?"

Newtonian Answer: "It's not really a source like a battery or a motor. What you're seeing is the changing of energy from one kind to another. The fact that masses [creates a gravitational field] creates a way for the positions of potential energy to be changed into the motions of kinetic energy. ...

GR Answer: "This question is related to a major unsolved problem in general relativity.