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acjohnson55

12,517 karma · joined October 4, 2012

I am a software engineering and music technology specialist, a former teacher, and entrepreneur.

You can reach me at alan@breakrs.com

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acjohnson55··on Bending Spoons buying Miro for $1.355B
Do you know anything about whether their post-Evernote acquisitions have played out similarly?
acjohnson55··on David Sacks: OpenAI and Anthropic Don't Need Regulations to Pace Frontier Models
Okay, so if they don't police themselves, then they're full of crap. But then what?

David Sacks holds an advisory role in the government. If all of this stuff goes belly up and all he was doing was tweeting, then he is not only full of crap, but failing the citizens he's supposed to be serving.

acjohnson55··on 'Fingerprints' inside the Sun could reveal if it once swallowed a planet
The book Seveneves is about civilization confronting impending doom from the moon exploding. I never finished the book because I felt it was depressingly realistic.
acjohnson55··on Music Theory for the 21st-Century Classroom
You might enjoy this unfinished project of mine: https://fakestory.acjay.com/

It's the culmination of years spent chasing an explanation of where all this stuff came from.

Highly informed by Tymoczko, who was mentioned in a sibling reply, and a bunch of other thinkers on the topic.

acjohnson55··on Reverse engineering my ADHD test
This is the case for me. I finally got diagnosed last year and prescribed Ritalin this year, and it has been transformative in aiding me in getting out of ruts/stalls.
acjohnson55··on Universal health coverage could save $1T and 114k lives a year: study
For families, do children also cost $500/mo?
acjohnson55··on Bede Liu, a digital signal processing pioneer, has died
This is so sad to hear. Prof. Liu was my advisor when I did my masters degree. He was so encouraging and welcoming, and a fantastic teacher.

One of my favorite memories was when I was discussing my first semester schedule with him. I was interested in taking a high level signal processing course. I asked him if that was OK, considering I had never taken the prerequisites.

He laughed and responded, "if we accepted you to this program, it's because we thought you can do pretty much whatever you want. So maybe you'll want to go to the library and read a textbook, but sure, you can do it."

And so I did. It was tough, but I pulled it off, and it taught me I had a gear I never had to exercise up until that point.

He was a great guy.

acjohnson55··on AI Can Now Design Functional Viruses. Should We Worry?
Something I've been worried about for years is the proliferation of technologies that give ever smaller numbers of people with smaller amounts resources the ability to impact billions of people, in potentially irreversible ways. Combined with automation, this is a recipe for disaster. We're clearly lacking in the ability to regulate and govern ourselves, and real world market forces (as opposed to the hypothetical free market) encourage reckless aggressiveness at the level of companies and countries.

Although, I must admit, as a doomer, I'm pleasantly surprised things aren't already worse than they are.

acjohnson55··on Bending Spoons makes first post-IPO acquisition with $1.3B Airtable deal
Airplane was an awesome product, but I think that was basically just an aquihire. I don't think Airplane had built a sustainable business.
acjohnson55··on Top amputation surgeon had own legs removed due to fetish. Were patients safe?
Wow, well, that's one of the more f'd up things I've ever read about. Not sure what else there is to say.
acjohnson55··on Harmony Explained: Progress Towards a Scientific Theory of Music (2012)
I don't think a redundant recognizer algorithm is required to explain minor.

Centuries before we had major and minor tonality, we had the diatonic scale.

Through the Renaissance, thirds began to be accepted as stable consonances, and from that, you get tertian chords (triads and seventh chords from stacked thirds, and their inversions). In the diatonic scale, you only have 3 types of tertian triad: 3 major, 3 minor, and 1 diminished. The diminished triad was not accepted as a stable consonance.

In another post, I summarize the history of the development of major tonality out of the convention of the authentic cadence: https://news.ycombinator.com/item?id=49095594

I have come to believe that minor tonality is quite simply a result of "what if we used a minor chord as the tonic, instead?" Note that the minor chord already existed and had been in use for quite some time. The conventions of minor tonality (the tonal use of Aeolian and Dorian modes, minor key signature, the raised seventh degree, relative and paralellel key conventions, etc), however, developed as a contrast to major tonality.

I'm not discounting your neurological explanation, I haven't read your whole paper yet, but just pointing towards historical contingency as another way to see it.

acjohnson55··on Harmony Explained: Progress Towards a Scientific Theory of Music (2012)
I would actually invert that and say that melody and rhythm are the most fundamental aspects of music. A harmonic progression with no sense of melody or rhythm is quite boring.

Harmony is derived from composing music with multiple melodic parts. This is most obvious with counterpoint, but even pop/rock music can be seen this way. The essence of pop/rock is a melody and bass line as the two primary parts, and the rest of the instrumentation often plays harmonies that imply inner voices.

acjohnson55··on Harmony Explained: Progress Towards a Scientific Theory of Music (2012)
The primacy of the major scale happened many centuries after the diatonic scale came to be predominant in Western music. The primary development that led to major tonality was the acceptance of thirds as stable consonances. As that happened, the Ionian mode (previously little used) began to stand out because it happens to have a tritone (B and F) surrounding its tonic major third (C and E). This is the core feature of the authentic cadence which gives us the tension <-> resolution progression that characterizes tonal music. Tonal music practice and theory develop in all sorts of interesting ways, spilling out from that basis.

The transitional period where this happened is roughly in the 1600s.

acjohnson55··on Harmony Explained: Progress Towards a Scientific Theory of Music (2012)
Yes, not having had the time to read TFA or the paper you shared yet, it immediately stands out to me that the bibliography of the latter paper is far more comprehensive.
acjohnson55··on Harmony Explained: Progress Towards a Scientific Theory of Music (2012)
If you want to go way deep, check out Tymoczko's first book: https://dmitri.mycpanel.princeton.edu/geometry-of-music.html

It's a challenging read, but extremely thorough and enlightening. Tymoczko wrote a follow up that extends and reformulates his theories, but I haven't gotten through it yet.

acjohnson55··on Harmony Explained: Progress Towards a Scientific Theory of Music (2012)
I also jumped straight to the bibliography to look for those two. Not seeing any reference to their work is disappointing and makes me a little pessimistic that digesting the entire piece will be worthwhile, as a scientific piece. He references Helmholtz, but his theories have been surpassed for more than a century.

But hopefully I'll get around to reading this at some point. It's one of my favorite topics. I wrote up my own attempt to explain the Western music system here: https://fakestoryofmusic.com

I've also been working on something smaller that focuses on major/minor tonality, specifically. But it's further from being in a place where I want to share it.

acjohnson55··on Zero roadkill as Amazon canopy bridges secure 15,000 crossings
Apparently, they do
acjohnson55··on Decoy Font
Found the robot, y'all
acjohnson55··on Rome Fell and Nobody Noticed
Yep. The Crisis of the Third Century, especially.

But also, pre-imperial Rome, a number of times. The Conflicts of the Orders, the entire late-Republican period from the Gracchi to the final demise of the Republic under Augustus.

And then the Eastern Empire had to reinvent itself multiple times. The near-collapse to the Caliphate. The Norman invasions of the Balkans and the First Crusade. The Fourth Crusade and its aftermath.

---

Then in the West, you have a couple brief periods where Rome isn't subject to Eastern Imperial overlordship. Justinian fully reconquers it in the late 500s, and Rome stays nominally part of the Eastern Empire until its brief loss to the Lombards in the 750s. But Charlemange's father, Pepin the Short, reconquered Rome and confirmed the Pope's authority over it. A couple decades later, Charlemagne is crowned Emperor of the Romans. And Rome exists under a constantly shifting balance of authority between Popes and Emperors until the Italian Unification in the late 1800s.

It should also be noted that even before the end of the Western Imperial line in 476, Rome rarely served as the actual home of the emperors since the late 200s.

---

So there's an interesting question of whether Rome ever did really fall, before the modern period. I would say "yes", in the sense that after the mid-400s, you never again have a sense of authority over the Mediterranean basin eminating from Rome (or the northern half of Italy). That's what people think of when they think of Rome. There are only brief periods of anything like that, and you never again have multi-generational, institutional authority.

But in other ways, there really is a continual reinvention of political systems that trace their lineage and cultural power to Rome. In that sense, it's kind of like China, which is similarly not really a continuous institution.

acjohnson55··on Claude Fable 5
> These findings differ from earlier studies that associated rudeness with poorer outcomes, suggesting that newer LLMs may respond differently to tonal variation.

Unless the mechanism is understood, my assumption is that this is a moving target.

acjohnson55··on Claude Fable 5
It would be interesting to understand the data on this. But I suspect that the results would vary by model.

But I avoid unnecessary emotion in my prompts because I don't want potentially distracting activations. Kind of like communicating with humans.

acjohnson55··on Jensen–Shannon Divergence
Every now and then, a random math or science concept hits front page. Usually, people chime in with interesting perspectives on it. Guess we'll see.
acjohnson55··on Claude for Small Business
I do think there is going to be an entire risk market for insuring against AI mistakes.
acjohnson55··on The text mode lie: why modern TUIs are a nightmare for accessibility
I've used Vim plenty for the past 30 years. I don't prefer it to GUI text editors.
acjohnson55··on The text mode lie: why modern TUIs are a nightmare for accessibility
I've always been a bit mystified by the popularity of TUIs. To me, the power of the terminal is the streaming model. Composible utilities is something that is much less common in GUIs.

I get it that maybe the constraints of terminals force design of TUIs to be more focused on the purpose of the tool than polish, but it's not that compelling of a point to me.

acjohnson55··on SpaceX says it has agreement to acquire Cursor for $60B
I use VSCode and Conductor right now.
acjohnson55··on GitHub Stacked PRs
They recently got bought by Cursor.
acjohnson55··on Who is Satoshi Nakamoto? My quest to unmask Bitcoin's creator
I think there's a pretty good chance Adam Back is Satoshi, but I don't think this is a great article. Perhaps he's rendering a careful scientific process in a way that makes for a readable narrative, but as written, it sounds like a lot of gut feel and confirmation bias.

The biggest new contribution to the Satoshi question seems to be ad hoc stylometry. To have faith in his methodology, he should be testing it on identitying other people. If he were to show me that a repeatable methodology that doesn't require hand tuning can identify other people with low error rate, and it said Back=Satoshi, that would be much more convincing.

Like so much tech writing done by non engineers, there are many places where mundane things are made to sound remarkable (e.g. Black's thesis used C++, the "heated debate").

acjohnson55··on New York Times Got Played by a Telehealth Scam and Called It the Future of AI
When I read the article, I was taken aback by the clear references to fraud in the before and after photos.

We're in an absolutely golden age of grift.

acjohnson55··on US and Iran agree to provisional ceasefire
Depends on what you mean by "win". It would be possible to go in, topple the regime and secure the nuclear material. But only at astronomical cost and years of blowback
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