alt Hacker Newsbut these nuts move by gravity do they not? and what in the universe is exactly up and down? and why would that matter?
are all celestial bodies then a local up and 'away from them' down?
this analogy hurts my brain. please tell me how to make the hurting stop
Replies
jvanderbot • 06/16/2025
You need to reread the middle only. It's a kind of "vacuum" effect.
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nitwit005 • 06/16/2025
This problem of explaining gravity with gravity is a bit pervasive, and it frustrated the heck out of me as a kid.
No you are right. You can't invoke gravity in an analogy trying to explain gravity.