3 ms·
This "couldn't there exist..." is doing a lot of work that I don't understand. "Couldn't there exist different laws of gravity for big things like planets and
by SamBam 3y ago
This "couldn't there exist..." is doing a lot of work that I don't understand.
"Couldn't there exist different laws of gravity for big things like planets and small things like rocks, which explains why I've never seen rocks attracted to each other?"
Yes, there could in some alternative universe, but not in this one that we know of, and it's not necessary to explain why you don't notice rocks being attracted to each other.
There could exist some difference between "microevolution" and "macroevolution," but not in this universe that we know of, and it's not necessary to explain species.
The entire concept was made up by creationists to try to add a patina of science to their deeply-unscientific beliefs. And the problem with an unscientific world view is that science will never change your mind about things, you'll just decide what science to accept and which to not accept.
- aleph_minus_one 3y ago> "Couldn't there exist different laws of gravity for big things like planets and small things like rocks, which explains why I've never seen rocks attracted to each other?" Something very related is a topic that is seriously discussed among physicists: > https://en.wikipedia.org/wiki/Modified_Newtonian_dynamics https://en.wikipedia.org/wiki/Modified_Newtonian_dynamics The problem with the existing theories of gravitation which seem to work quite well on the scale of solar systems is that there does seem to exist evidence that some observed data on the scale of galaxies might not be well-explainable by these theories. See > https://en.wikipedia.org/wiki/Modified_Newtonian_dynamics#Observational_evidence_for_MOND https://en.wikipedia.org/wiki/Modified_Newtonian_dynamics#Ob... Very recently new evidence for MOND came up: > https://phys.org/news/2023-08-smoking-gun-evidence-gravity-gaia-wide.html https://phys.org/news/2023-08-smoking-gun-evidence-gravity-g... > https://news.ycombinator.com/item?id=37051241 https://news.ycombinator.com/item?id=37051241 See also: > https://tritonstation.com/2023/08/02/is-ngc-1277-a-problem-for-mond/ https://tritonstation.com/2023/08/02/is-ngc-1277-a-problem-f... > https://news.ycombinator.com/item?id=37009037 https://news.ycombinator.com/item?id=37009037
- SamBam 3y agoThat's why I deliberately said "planets" vs "small rocks," for which this does not apply.