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Re:The James Webb Space Telescope is finding too many early ... by azalemeth on Thursday January 12, 2023 @07:20PM (#34362289)
My favourite example of the intractabilities of some theories is that magnetohydronamics apparently can't predict the formation of streamer jets when you put your finger on a kid's plasma ball – i.e. the main point of the toy is beyond the most advanced theory that lies behind NIF, JET, ITER, etc...
Re:The James Webb Space Telescope is finding too many early ... by Buttons840 on Thursday January 12, 2023 @08:03PM (#34362630)
At this point in the thread, I'm wondering if we do a disservice to physics students by making it appear we have it all figured out.
Re:The James Webb Space Telescope is finding too many early ... by moloch-hai on Thursday January 12, 2023 @08:34PM (#34362863)
It is easy for children to come up with questions for biologists that none can answer, and that none has even tried to answer.

Biologists are almost unique among scientists in being happy to say how little they still know about their subject. Up until last year nobody had thought to see whether anything eats viruses! Turns out some do.

Re:The James Webb Space Telescope is finding too many early ... by eru on Thursday January 12, 2023 @09:53PM (#34363422)
> Biologists are almost unique among scientists in being happy to say how little they still know [...]

Citation needed.

> Up until last year nobody had thought to see whether anything eats viruses! Turns out some do.

Nah, lots of things eat viruses. It's nothing unusual at all. You eat viruses, I eat viruses. They are everywhere, after all.

The novel finding was a critter that lives / can live solely on viruses.

Re:The James Webb Space Telescope is finding too many early ... by abudabi123 on Thursday January 12, 2023 @10:12PM (#34363537)

    > Nah, lots of things eat viruses. It's nothing unusual at all. You
    > eat viruses, I eat viruses. They are everywhere, after all.
When an engineer walks in front of an idling jet engine you don't say the jet eats viruses.
Re:The James Webb Space Telescope is finding too many early ... by eru on Friday January 13, 2023 @01:43AM (#34364660)
To be more precise, viruses are just made up of proteins and DNA / RNA. Your normal digestion that can handle proteins and DNA/RNA from animals, plants etc doesn't have any more problem breaking down virus proteins into amino acids and absorbing them.
Re:The James Webb Space Telescope is finding too many early ... by whatshisface on Friday January 13, 2023 @02:57AM (#34365071)
I think the OP was talking about the bacteria that derive non-negligible sustenance from viruses.

>Moreover, our foraging trials demonstrated robust growth in the Halteria population with only chloroviruses as food (rint = 0.66 ± 0.26 [SD], black lines, Fig. 1A), with minimal to no growth in the controls (with chloroviruses filtered out; rint = 0.22 ± 0.12 [SD], blue lines, Fig. 1C). The abundance of the larger Paramecium did not increase in treatment or control trials (Fig. 1D), indicating that not all ciliates can grow on chloroviruses in these conditions, even when they consume them.

https://www.pnas.org/doi/10.1073/pnas.2215000120

Re:The James Webb Space Telescope is finding too many early ... by eru on Friday January 13, 2023 @04:07AM (#34365505)
Yes, I know. That's why I wrote

>> Up until last year nobody had thought to see whether anything eats viruses! Turns out some do.

> Nah, lots of things eat viruses. It's nothing unusual at all. You eat viruses, I eat viruses. They are everywhere, after all.

> The novel finding was a critter that lives / can live solely on viruses.

Re:The James Webb Space Telescope is finding too many early ... by moloch-hai on Friday January 13, 2023 @06:30AM (#34366414)
You wrote it, but it was what we all understood already, making writing it nothing but an exercise in snark.
Re:The James Webb Space Telescope is finding too many early ... by eru on Friday January 13, 2023 @07:23AM (#34366774)
Not sure.

Eg creatures that eat plastic are still news, even if plastic is not their sole diet.

Re:The James Webb Space Telescope is finding too many early ... by moloch-hai on Friday January 13, 2023 @08:46AM (#34367563)
Yet, you are eating plastic every day.
Re:The James Webb Space Telescope is finding too many early ... by eru on Saturday January 14, 2023 @02:15AM (#34378024)
Yes, but not digesting it.
Re:The James Webb Space Telescope is finding too many early ... by DiggyJohnson on Thursday January 12, 2023 @11:10PM (#34363855)
> Citation needed

How could you possible find a citation for that? It’s not even pretending to be a scientific or totally objective claim. Asking for a citation for this type of statement is no way to have a discussion. Do you not see why?

Re:The James Webb Space Telescope is finding too many early ... by eru on Friday January 13, 2023 @01:42AM (#34364652)
Eh, 'Citation needed.' was my admittedly somewhat snarky way of calling bullshit.

Most any scientist will happily babble all about the stuff they don't know yet in their discipline, because that's exactly where the excitement lies for them.

Re:The James Webb Space Telescope is finding too many early ... by moloch-hai on Friday January 13, 2023 @06:32AM (#34366437)
Some do. Many don't.

Much of Wikipedia is "curated" by retired professors carefully scrubbing mention of anything new that makes their thesis look wrong.

Re:The James Webb Space Telescope is finding too many early ... by eru on Saturday January 14, 2023 @02:15AM (#34378026)
> Much of Wikipedia is "curated" by retired professors carefully scrubbing mention of anything new that makes their graduate thesis look ill-conceived.

What makes you think so? What evidence do you have?

Re:The James Webb Space Telescope is finding too many early ... by moloch-hai on Sunday January 15, 2023 @03:45AM (#34387882)
Have you read any of it?
Re:The James Webb Space Telescope is finding too many early ... by maegul on Thursday January 12, 2023 @08:22PM (#34362776)
So much this! There’s surely a huge argument that all of scientific education is a massive disservice.

The point should be to learn and appreciate the method or process of scientific investigation of uncertain and mysterious or hard to understand phenomena.

Instead we get dogma as a proxy of measuring intelligence with little regard for what the fundamental tools are of being a scientist.

I’ve gone all the way through to Grad School and came out astounded at just how little commitment to or a sense of the essence of scientific investigation and what’s expected of the investigator there is in the system. They don’t prepare you for it because they themselves weren’t prepared. You can try to leverage some meta understanding of the “process” in conversation or debate, but so often the conversation falls flat because few are prepared or accustomed to it. Research is often done, IMO, in philosophical poverty by people eking out a living in the gutters of novelty and paradigmatic safety, averting their gazes from the sky (flourishes aside, you get my point).

Putting aside the health of actual research. If the general public is to benefit from education and pass that benefit into their society (that’s the point right), it needs to be more than soon to be forgotten and often useless fallacies.

Re:The James Webb Space Telescope is finding too many early ... by cwalv on Thursday January 12, 2023 @11:11PM (#34363862)
> There’s surely a huge argument that all of scientific education is a massive disservice.

> If the general public is to benefit from education and pass that benefit into their society (that’s the point right), it needs to be more than soon to be forgotten and often useless fallacies.

I realize this is hyperbole, but still I think it's obvious that there is more than soon to be forgotten and often useless fallacies.

I do generally agree though that current models/paradigms are usually presented more as "the final word" vs "a useful mental model".

Esp. when paradigms are challenged by, or conflict with untestable traditional explanations, ppl tend to get irritated and overstate the confidence of their own understanding

Re:The James Webb Space Telescope is finding too many early ... by maegul on Friday January 13, 2023 @01:57AM (#34364745)
Agree. I’m guilty of descending to hyperbole at times!

Nonetheless, while I agree with your pushback, I do wonder how much utility there is in the “dogma” approach. There’s a lot of “facts” being thrown around in education, from what I’ve seen, that are often forgotten or become vague memories. How much better would it be to focus on skills and practice and concepts? Especially in the digital age where a fact is easily discoverable, provided one has the appropriate research skills.

Re:The James Webb Space Telescope is finding too many early ... by treeman79 on Thursday January 12, 2023 @08:18PM (#34362749)
If it was all figured out why get into the field? Sure some do it just to know. But the hunt is what drives most.
Re:The James Webb Space Telescope is finding too many early ... by flockonus on Thursday January 12, 2023 @09:29PM (#34363241)
Calling mental models "laws of physics" is the biggest linguistic disservice to science itself, so in a way, yes.
Re:The James Webb Space Telescope is finding too many early ... by zinclozenge on Thursday January 12, 2023 @09:34PM (#34363288)
I don't think I've ever, out of all my physics classes up to grad seminars, been given the impression we have everything figured out. In fact, it was hammered into us that all we have are "effective" theories, at least when it comes to high energy physics, and that's not even talking about grand unification (electroweak + strong force unification), let alone Theory of Everything (electroweak + strong + gravity).
Re:The James Webb Space Telescope is finding too many early ... by epicureanideal on Thursday January 12, 2023 @11:43PM (#34364036)
Maybe not where you studied, or at the level you studied, but in upper division undergrad physics at a top tier California school I definitely was given the impression that I should just crunch the numbers and not think too much about how it might be working.
Re:The James Webb Space Telescope is finding too many early ... by njarboe on Friday January 13, 2023 @12:09AM (#34364184)
Was this a quantum mechanics class? Thinking about how it might be working leads to strange things like the Many-Worlds Theory[1] and other very weird ideas. "Shut up and calculate" is the usual method of dealing with these deeper questions.

Beware; deep rabbit hole. [1]https://plato.stanford.edu/entries/qm-manyworlds/#:~:text=Th....

Re:The James Webb Space Telescope is finding too many early ... by mr_mitm on Friday January 13, 2023 @06:04AM (#34366237)
Who do you think makes it appear we have it all figured out? That is not my impression at all. All the scientists I know are extremely aware of the limitations of their field.
Re:The James Webb Space Telescope is finding too many early ... by moloch-hai on Thursday January 12, 2023 @08:31PM (#34362849)
Magnetohydrodynamics is, specifically, the "easy part" carved out of plasma fluid dynamics. It is inadequate to almost all applications, with only rare, precious exceptions, mostly manufactured. Devices that rely on plasma fluid dynamics to work are carefully designed to keep the plasma in the domain where MHD can be used to model them.

Astrophysicists, as a rule, hate to be obliged to consider phenomena that involve plasma fluid dynamics, even what can be shoehorned into MHD. Such phenomena are thus orphaned. The exception, of course, is solar physics, where nothing can be done at all without fully general plasma fluid dynamics. Solar physicists have the largest gonads in science, on par with rocket propellant chemists.

Re:The James Webb Space Telescope is finding too many early ... by srcreigh on Thursday January 12, 2023 @11:51PM (#34364084)
Is plasma fluid dynamics the most important hated obligation of astrophysicists?
Re:The James Webb Space Telescope is finding too many early ... by moloch-hai on Thursday January 12, 2023 @11:57PM (#34364119)
I think most consider it "somebody else's problem". I know some don't like to think there is anything to it beyond MHD, so they call anything involving plasma "MHD".

Are there other phenomena they see but don't like to talk about? Maybe?

Re:The James Webb Space Telescope is finding too many early ... by HPsquared on Friday January 13, 2023 @06:46AM (#34366531)
Is it called "hydrodynamics" because of an assumption of incompressibility (like regular hydrodynamics vs aerodynamics)?
Re:The James Webb Space Telescope is finding too many early ... by moloch-hai on Friday January 13, 2023 @07:45PM (#34376015)
It has several commonly unphysical assumptions, including infinite conductance, "freezing" the magnetic field in a chosen frame, and assumptions about time and length scales.

"Effects which are essentially kinetic and not captured by fluid models include double layers, Landau damping, a wide range of instabilities, chemical separation in space plasmas and electron runaway."

That electrons are 1836 times less massive than the lightest positive charge carrier is neglected. Accelerated, they strike positive and neutral particles and knock loose more electrons.

Re:The James Webb Space Telescope is finding too many early ... by brotchie on Thursday January 12, 2023 @11:01PM (#34363794)
Intractable in the analytic sense, or intractable numerically… or both?
Re:The James Webb Space Telescope is finding too many early ... by azalemeth on Friday January 13, 2023 @04:04AM (#34365481)
Both!