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The path from Lee-Yang to Yang-Mills is short (~months) but the shortness is instructive

(It's more than just a lesson in style, imho. Lee-Yang could become more famous than Yang-Mills, in time! Like you're implying there-- that was a honest mistake on your part; your claim to "idiocy" teaches less than it might seem :).

See this comment which might seem completely throwaway https://news.ycombinator.com/item?id=45632370)

In the same vein, here is a short-note of Yang, readable to nonscientists, here:

https://doi.org/10.1142/S0217751X03017142

(He rebuts Dyson)

Necessary Subtlety and Unnecessary Subtlety


It's also an artifact of my subfield (nEDM): A common "history of nEDM" goes Lee-Yang then skip forward to Cronin and Fitch, then sketch a picture of how nEDM violates T (and P, but that's not groundbreaking), then talk about how the French used a decommissioned naval gun turret for one of their experiments. Bless 'em.

Have you ever seen The Timetables of History? It re-syncs world events that you learned about from disparate sources. I kind of need that here!


Thanks! I've squirreled your perspectives here as they are likely to be useful at some point..

(Esp. the "reification" of TRI-breaking)


True. Rubber ducks for self-debugging are uh mostly overrated. A trained therapist--- sometimes free-of-charge-- works for most issues where some would rubber duck

(reminder to self)


I must agree.

That you can prove the inner voice false does not help in the least. It does not listen to reason, and it does not shut up. It needs to be addressed from a completely different angle.


Two other data points for this are

Brown and Mercer (who became ideologically opposed co-CEOs)

https://old.reddit.com/r/algotrading/comments/k299vp/were_br...

"Speech recognition" in those days meant Markov too


>To do so, we have to take accountability, rather than [just] allowing it to be forced upon us.

Ah, one should think of accountability as a 2-way pipe rather than a sink!


Friending yourself means that you don't have to rely on others to enjoy jokes at your own expense!

(Edited for clarity)


Knowing yourself to know, and forgive / accept, who and what you are.

Allows you to appreciate the perceptiveness of others when they're correct.

Also, if you do not know yourself (and especially if you cannot forgive yourself) you're going to struggle to deal with your own children.

My kids reflect me back at myself in what were frustrating ways, until I realised it was me and my influence, and it became massively endearing.

Although I may be too forgiving of myself (but in amongst that I do still have 'the voices of discontent' but the longer I live the more their sentiment is proven wrong).


Kids are a great mirror

--sometimes their unforgiveness (beyond mere unforgivingness/mercilessness :) is a spur to get better..

Are some voices of discontent not simply expressing a desire to make things better for others? Those shouldn't be dismissed so readily



In order to explain his impact to people, someone could find a friendlier name for "gauge"?

Some say that list of stylists would not be meaningful without von Neumann (although Dyson might say that frogs have no style*)

https://youtu.be/OmaSAG4J6nw?t=24m19s

Please see next slide for a minimal example of a "real(!) gauge field", even if you don't like philosophy of physics.

*https://news.ycombinator.com/item?id=17457678


> friendlier name for "gauge"?

Do you suppose small-gauge railroads are too niche an interest? Or is "gauging" interest not friendly?

It's abstractions all the way down, but the term was coined in its still generally used definition of "scale". To explain the concept to the general public, keep it simple and poetic. If they want to unpack your metaphor, they're going to need a few years of university physics education!


Sorry: gauge-field.

It's poetic and you can pardon the french but the combination is alien.

Poetry is hard: a poetic way to say "co-ordinate transformation" or "tensors" could help students to calculate with them. I'd suggest "shear-squeezing-your-xray-lens" for everything but I fear the backlash from teachers because that would take a doctorate (or more) to unpack!


The problem you run into is that laypeople operate with modified Aristotelian physics. They might "know" that the speed of light is a speed limit, and they might "know" that quantum mechanics says you can't measure anything.

They also believe that objects keep moving after you push them because they retain a memory of your push, and when that force runs out the objects come to rest*

You are not, will not, cannot teach them how to do a meaningful modern calculation in a single conversation**. Hell, Feynman's lectures were a failure: they didn't serve the audience he was supposed to be teaching (first year students).

So are you talking to students? Or is this a cocktail conversation? Because those are two very different settings.

*&**) These points are extensively documented in the PER literature. SciComm is really important and really useful, but it's not the same as effective pedagogy.


I was disabused of such pretty quick when I realized I had to repeat the same exercise over multiple sessions to replace in the students' heads Aristotelian physics with Newton's 3rd law XD.

At the same time, I learnt to design a better force diagram than displayed in the assigned textbooks (many of which I suspect were influenced by Feynman)..

Which is kinda my point. That the status quo kinda suck doesn't mean the notation or examples can't be improved upon. It's heartening that we're entering a post-textbook age..

I wasnt so interested in scicomm up there because I suspect that the "slow" uptake of Yang's ideas had more to do with bad pedagogy


Better force diagrams, you say? Any literature (or textbook) references for that? How about some notes?

The word gauge is completely opaque to me, invokes no reasonable connotation.

I always wished they gave this thing a better name but I have no idea what.


It's named that for a reason. It has to do with invariance under an arbitrary selection of parameters like scale, hence, choice of railroad gauge.

At least they tried to give a descriptive name! Most ideas are named after the people who are most closely associated with them. Yang-Mills. Newtonian. Euclidean. Planck. Many of those names invoke very specific ideas, even though eponyms are about as opaque as they come.


> It has to do with invariance under an arbitrary selection of parameters like scale, hence, choice of railroad gauge.

Could you elaborate on that?


Just as you can select whatever railroad gauge as a country (if you also build compatible trains, obviously) and have it work just fine no matter what you select--until you try to connect it to another country and then you need to have converters--, some physical theories have gauges like this that you can choose however you want and it will work fine (and be equivalent to a theory in any other gauge)--but if you want the theory to work with the next guy's theory you have to have converters.


https://en.wikipedia.org/wiki/Coupling_from_the_past

I "know" this guy from his other insanely clarifying (though dead tree based) expositions

Understandable-- & I think personal-ish submits are the best way to HN -- but I wish he'd keep commenting


From Sanjuro, as quoted here?

https://ameblo.jp/fighting-toma/entry-12251883996.html

Eg: "masculine" (relentlessly) open debate+unfettered pursuit of truth as advocated in TFA <-?-> never sheathing the sword


That’s the right movie.


I'd say--- to a good approx--- everyone here in the comments wants to work like Wóz & sound like Jobs.

(Very few are actively looking to be hired, and those that are would rather post a frontpaging deepdive blog than practise their commentary?)


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