There's a certain radius in spiral galaxies inside of which you don't need dark matter. That's what Milgram tries to explain by modifying gravity. By all means, have as a goal explaining that in the dark matter paradigm,. But it's going to be hard and you can't say because you haven't explained it yet, dark matter is in real. The fact that we're not there now is not strong evidence that we have to change the laws of physics.
Physics is in crisis, what else is new? That's what we hear in certain corners, anyway, usually pointed at "fundamental" physics of particles and fields. (Condensed matter and biophysics etc. are just fine.) In this solo podcast I ruminate on the unusual situation fundamental physics finds itself in, where we have a theoretical understanding that fits almost all the data, but which nobody believes to be the final answer. I talk about how we got here, and argue that it's not really a "crisis" in any real sense. But there are ways I think the academic community could handle the problem better, especially by making more space for respectable but minority approaches to deep puzzles.
Blog post with transcript: https://www.preposterousuniverse.com/podcast/2023/07/31/245-solo-the-crisis-in-physics/
Support Mindscape on Patreon: https://www.patreon.com/seanmcarroll
See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.