4 ms·

https://www.reddit.com/r/Physics/comments/7711mr/backreaction_inflation_never_solved_the_flatness/doit3ii/ https://www.reddit.com/r/Physics/comments/7711mr/back

by platz 9y ago

https://www.reddit.com/r/Physics/comments/7711mr/backreaction_inflation_never_solved_the_flatness/doit3ii/ https://www.reddit.com/r/Physics/comments/7711mr/backreactio... > > "I am fascinated by this for the same reason I’m fascinated by the widely-spread and yet utterly wrong idea that the Bullet-cluster rules out modified gravity. As I explained in an earlier blogpost, it doesn’t. Never did. The Bullet-cluster can be explained just fine with modified gravity. It’s difficult to explain with particle dark matter." > As others explained to her in the comments section of that earlier blog post [1], she was wrong. And yet here she is, saying it again, this time even more confidently. [1] http://backreaction.blogspot.com/2017/01/the-bullet-cluster-as-evidence-against.html http://backreaction.blogspot.com/2017/01/the-bullet-cluster-... (The Bullet Cluster as Evidence against Dark Matter)

Luc 9y ago
So a commenter on HN quotes a commenter on Reddit who said that some commenters on BackReaction 'explained to her she was wrong'. That's grand and all, but is anyone in that chain actually a cosmologist like Sabine Hossenfelder?
- platz 9y ago
  the commenter on Reddit happens to be an astrophysicist
  - Luc 9y ago
    Well that's one hurdle cleared. Here's their comment history if anyone is interested: https://www.reddit.com/user/ididnoteatyourcat https://www.reddit.com/user/ididnoteatyourcat
Sniffnoy 9y ago
Wrong about what, exactly? The details matter here! It seems the commenters point out that she's wrong that it's difficult to explain with particle dark matter, but if there's anything there to show that she's wrong about it being explainable with STVG I've missed it.