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There's quite a lot of arguments back and forth about it through this whole thread if you really want to dive into it. The cliff notes is effectively that gravi
by cthalupa 3y ago
There's quite a lot of arguments back and forth about it through this whole thread if you really want to dive into it. The cliff notes is effectively that gravity is not a force in GR. It is considered a force in newtonian physics, and might be a force again if we ever make a Theory of Everything. Gravity is fairly akin to a force in string theory, so if they do end up being right, gravity would be a force. If the Loop Quantum Gravity folks are right, gravity will remain not a force. If it's some other theory, who knows what it'll end up being.
- silent_cal 3y agoI'm not about to comb through threads on Hacker News and synthesize a theory from comments by people who may or may not know what they're talking about. But thanks.
- cthalupa 3y agojohncarlosbaez is about as real deal of a physicist as they come, and pdonis is a nuclear engineer with a degree from MIT who is a longstanding mentor on the largest physics discussion forum in the world. I'd recommend reading their posts if you are curious about the take on this question from people well educated in the subject.