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Fundamental physics is dying? [video]

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Re: Fundamental physics is dying? [video]

#21
post #8

As a non-physicist, it’s hard to understand if she has a point or not. Any physicists care to weigh in?

Follow the links to John Baez's thoughts ("the situation is even a bit worse than she makes it sound"): https://news.ycombinator.com/item?id=41808143

Re: Fundamental physics is dying? [video]

#22
post #4

The fundamental reason for this is simple. Humans are prone to cognitive dissonance. Meaning, we do absurd things to avoid painful thoughts. And anything that questions our sense of identity, is a painful thought. So if my self-image is, "I've advanced our understanding of the fundamental nature of reality," then the idea that my contributions weren't useful becomes painful. So we avoid thinking it, challenge people…

[flagged]

Re: Fundamental physics is dying? [video]

#23
post #13

Earlier quoted context omitted.

[flagged]

Exactly. Consistently untestable and unfalsifiable claims for decades has to be seriously questioned at some point, and I think we're well beyond that point. This is especially true for string theory. I'm particularly fond of how Angela Collier laid out the timeline of string theory in her video on it[0] as well as the consequences that science communication is now facing as a result. [0] = https://www.youtube.com/wa…

The same could've been said of atomic theory, neutrinos, gravitational waves, the higgs boson, cmb radiation, plate tectonics, and quantum mechanics at various points in time.

Re: Fundamental physics is dying? [video]

#24
post #22
post #4

The fundamental reason for this is simple. Humans are prone to cognitive dissonance. Meaning, we do absurd things to avoid painful thoughts. And anything that questions our sense of identity, is a painful thought. So if my self-image is, "I've advanced our understanding of the fundamental nature of reality," then the idea that my contributions weren't useful becomes painful. So we avoid thinking it, challenge people…

[flagged]

It's in the video: LQG is not a promising, or even a plausible, physical theory. That's the idea.

Re: Fundamental physics is dying? [video]

#25
post #13

Theoretical physics are theoretical; that seems to be the crux of her problem. And in that light it makes sense that she's become an influencer who makes content instead of someone who devotes most of their time to advancing the science. Yes, oftentimes people will be paid to work on problems, and they'll end up in a cul-de-sac. That will be the case for the majority of the field in the case of something like quantum…

[flagged]

I think that you have half a point. You're absolutely right that just because people are paid to think about things, doesn't mean that they are making progress. And there is a lot of evidence that this is true today in the foundations of physics.

However string theory was not intentionally untestable. In https://www.youtube.com/watch?v=eRzQDyw5C3M she gives a good history of why it was originally invented, what testable predictions it made, how it failed those tests. And then how string theorists who were trying to find relevance for their work tried to keep it going as it stumbled into being untestable.

Re: Fundamental physics is dying? [video]

#26
post #22
post #4

The fundamental reason for this is simple. Humans are prone to cognitive dissonance. Meaning, we do absurd things to avoid painful thoughts. And anything that questions our sense of identity, is a painful thought. So if my self-image is, "I've advanced our understanding of the fundamental nature of reality," then the idea that my contributions weren't useful becomes painful. So we avoid thinking it, challenge people…

[flagged]

"Don't be snarky."

"Please respond to the strongest plausible interpretation of what someone says, not a weaker one that's easier to criticize. Assume good faith."

https://news.ycombinator.com/newsguidelines.html

(I'm sure you could rephrase your point here as a substantive thought in a respectful way and then it would be fine)

Re: Fundamental physics is dying? [video]

#27

Earlier quoted context omitted.

Exactly. Consistently untestable and unfalsifiable claims for decades has to be seriously questioned at some point, and I think we're well beyond that point. This is especially true for string theory. I'm particularly fond of how Angela Collier laid out the timeline of string theory in her video on it[0] as well as the consequences that science communication is now facing as a result. [0] = https://www.youtube.com/wa…

The same could've been said of atomic theory, neutrinos, gravitational waves, the higgs boson, cmb radiation, plate tectonics, and quantum mechanics at various points in time.

Weren't those all arrived at from a series of falsifiable predictions? What does string theory even predict that can be tested?

Re: Fundamental physics is dying? [video]

#28
post #9

Earlier quoted context omitted.

She was ripping on the valuations and economics of quantum computing companies the other week, and her critiques were such that they could be levelled against capitalism itself and basically any company in the market. Was an obvious and clear step way out of her area of expertise.

That doesn't have anything to do with her criticism of Loop Quantum Gravity, and is precisely the derailing of the topic that dang is asking you to avoid.

When people don’t have expertise in an area they are prone to making really dumb comments. She has a history of this on other topics. As such I think it’s appropriate to mention so that people can evaluate how much weight/time they want to spend on her video and views.

Re: Fundamental physics is dying? [video]

#29
post #13

Theoretical physics are theoretical; that seems to be the crux of her problem. And in that light it makes sense that she's become an influencer who makes content instead of someone who devotes most of their time to advancing the science. Yes, oftentimes people will be paid to work on problems, and they'll end up in a cul-de-sac. That will be the case for the majority of the field in the case of something like quantum…

[flagged]

This is a very cruel reading of string theory. Intentional? What?

Re: Fundamental physics is dying? [video]

#30
post #2

John Carlos Baez thinks Sabine has a point. https://mathstodon.xyz/@johncarlosbaez/113285631281744111 >Despite the silly clickbait title of this video, Sabine says a lot of interesting stuff in it: her criticism of claimed deviations from Lorentz invariance in loop quantum gravity is about as good as you'll get from anyone who hasn't actually worked on loop quantum gravity. I worked on it for about 10 years, and the…

30 years ago I spoke to a fairly well known and regarded physicist who said something rather interesting along the same lines. Quoting as accurately as I can "physics looks sexy from the outside due to some celebrities but inside it's mostly worse than anyone wants to admit.". He also suggested I go and study mathematics instead because at least there will likely be some applications for it. I did and I am glad I did.
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