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Terretta

20,816 karma · joined February 16, 2010

Co-founder and head of technology and security at a fintech.

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WE ARE HIRING: Data, software, and systems engineers, especially with strong math, regulated or financial services backgrounds.

Expertise with functional programming and/or formal reasoning is a strong plus, as well as ability to dust off some linear algebra and differential equations, calculus (including differential, integral and stochastic), and probability and statistics.

See: https://en.wikipedia.org/wiki/Quantitative_analysis_(finance)

If you math, you see data flows as living systems, and you grok systems as manifestations of code, you’ve probably got the job.

ABOUT US (AND YOU):

ClearAlpha Technologies LP is a rapidly growing alternative investment manager based in Greenwich CT that is reshaping the market for alpha. We're different by design; bringing together the flat, nimble, collaborative culture of a startup with decades of industry experience in senior leadership roles at the world's top hedge funds, banks, and technology businesses: AQR, Bridgewater, Goldman Sachs, Citadel and more.

At ClearAlpha, we're obsessive about outcomes and we give each other the trust and flexibility we all need to deliver. No micro-management, no unnecessary bureaucracy, and no old-fashioned hierarchies. Everyone in our team is dedicated to mastering their craft at the very highest level. From our investment teams to our technologists, we work side-by-side in cross-functional teams to deliver the best results for our clients and their end-constituents. Empowered by the very latest and best cloud-native technologies, everyone at ClearAlpha has the data and tools we need to deliver those results without friction.

We're looking for the right people to throw themselves into shaping the space with us and driving it forward. If you're ready and excited by that challenge, we look forward to meeting you.

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About Me: Entrepreneur, builder, architect, inventor, investor; founder or CTO at firms with headcounts spanning 5 orders of magnitude, in digital, network, media, healthcare, and financial services.

Contact me personally via my username at gmail, or...

CV: https://www.linkedin.com/in/terretta

submissionscomments
Terretta··on How do programming languages impact token efficiency and correctness?
Excellent not for results* but for thought process, and bonus appendices for eval process...

* Results useful as they differ from pop theory, but mostly clustered enough you'd pick the language for other reasons.

Terretta··on As a Windows user, it's a surreal way to install a program
This tool keeps that log, and offers it when you drag an app to the trash:

https://www.noodlesoft.com/

It does lots more, but this bonus is great.

Terretta··on uBlock Origin is giving up the fight to keep ads off Facebook
Over a decade ago, web framework and web site generation tooling had already ruined any kind of automated anything, as the frameworks and tools started using what amount to GUIDs for identifiers. I suppose the charitable take on why is as only machines needed to read it, and css styles and div IDs had become token gibberish anyway, so semantics were irrelevant.

Whether selecting for ads or content, one had to figure different ways of getting after it, whitelisting was already off the table.

We'd found "structure" could work, but had to be fuzzy and adaptive as marketing shuffles pages around constantly, not just on the whole, but for A/B runs and personalized "experiences".

So that seems back to, hey, models could help.

(Though none of them, to date, attain as high success as latest hand coded "reader" tools, worth inspecting for how this could be generalized.)

Terretta··on uBlock Origin Is Giving Up the Fight to Keep Ads Off Facebook
Worth a white paper to see which costs less energy, using Apple's built in LLM, or downloading and displaying all the FB ads using radio, playback, and screen animation energy.
Terretta··on From 13.5M installs to 499 active devices
Both are particularly badly written. Story ok. Post and reply vocab tells, fingernails on chalkboard. Broken ESL is genuinely preferable here.

Try to not get more upset when readers coach you than when the LLM rewrites you. Both happen, both are fine.

Terretta··on Managing AI Coding Costs at Scale
> Firstly, while routing is important, simple things like observability

STRONG agree. Most devs, if they can see their costs, try. Even just putting it in a starship prompt goes a long way!

Observability supports effective, responsible, and accountable use, "cost controls" (as typically enterprise defined) supports bean counters. Ensuring Observability is recognized as a valid Control™ should be on every engineering executive's TODO list.

> the cache is the dominating cost reduction force

TY for the rich reply. As you're very aware of the cache issue, it might have been nice to have the word "cache" more prominent on your "Key Techniques" image (currently Lower Cost Models, Smart Routing, Spend Controls, Context Optimization; cache tuning buried at the end) or higher in the body sections.

It was mostly the image that prompted (ha) me to call out the marketing driven angle.

Terretta··on Mark Zuckerberg attacks 'closed' AI rivals as Meta returns to open models
> fairly sure the link is wildly overstating its case

Sorry for the particular link, I'd grabbed whatever.

If one takes a minute, one can find contemporary newspaper articles. IIRC, many were about how people could suffocate.

https://books.google.com/books?id=Lm03AQAAMAAJ&pg=PA337&dq=t...

Contemporary women's health:

https://books.google.com/books?id=9-FXAAAAMAAJ&pg=PA71&dq=ho...

And contemporary survey of fears:

https://books.google.com/books?id=-RdAAAAAcAAJ&pg=PA107&dq=%...

Aaand, a 2023 takedown of claiming claims about historical tech hysteria:

https://www.wired.com/story/technology-predictions-history/

Terretta··on How Claude marks AI-generated content
Considering how weirdly detuned tokens selections have become in Anthropic's LLM prose in recent models, there is a chance this goes unnoticed in everyday use.
Terretta··on How Claude marks AI-generated content
Paradoxically, one of those two firms puts considerably more effort into accommodating such differences, and the other has signed the same EU law and just hasn't performed as well rolling it out.

Both points suggest your subscription support was well chosen before.

Terretta··on Mark Zuckerberg attacks 'closed' AI rivals as Meta returns to open models
Did you know that if trains or cars go over 30 mph, it's disastrous for public health? Not from accidents. Just trauma from (ahem) acceleration:

https://illuminatingfacts.com/the-train-speed-panic-why-peop...

Reason that hysteria remains apropos now is that then, and now, we're figuring out how to deal with something beyond merely incremental change.

Irony is roads and sidewalks should have changed much more. We never did get around to good controls leading to zero deaths*, we decided a 100 people dead per day is a reasonable cost of convenience.

How much do our cyber traffic and cyber pedestrian controls need to change for everyman to get to drive AI? Car seats? Seatbelts? Air bags? Speed limiters? Pedestrian only living spaces? Driverless cars?

Many practical responses, likely a mix of things we haven't thought of yet, just as horses and horse drawn carriages didn't require most of them to coexist. Controls develop like scar tissue more naturally than they appear in advance.**

And if the better analogy for LLMs turns out to have been less like cars, more like flammable gas blimps, we'll figure that out too and tell cautionary stories for generations... but long before the stories are forgotten we'll have already come up with something more practical, faster, and – oh well – perhaps even deadlier per mile.

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* Still working on https://en.wikipedia.org/wiki/Vision_Zero

** Not saying that's as it should be.

Terretta··on Managing AI Coding Costs at Scale
Exactly. There are plenty things they could suggest for that.

Anyway you'll likely get a more effective and up to date set of advice by skipping marketing pieces and pointing your favorite frontier model at /r/LocalLLaMA in deep research mode and asking it to synthesize the latest advice, or even try ideas out for itself and let you know what works for your own session history.

Terretta··on Managing AI Coding Costs at Scale
Sorry, didn't mean they're using pi. They're itemizing ways to get better results but not showing pi, while other testing shows most models (including Opus) achieve better from within pi.
Terretta··on Managing AI Coding Costs at Scale
DISCLOSURE: I like Databricks. While cosplaying enterprise CTO, I've directed the purchase and heavy integration of their work for over a decade.

That said, this type of post needs to be read with product marketing context in mind.

> I think the most important aspect from it is the auto-routing

On the contrary, in white paper studies auto-routing is shown to destroy the single largest token cost they found, curiously not shown in their opening graphic. As they put it in their own words near the end:

"simple tuning of… caching settings… 50% reduction in … costs, with no observed quality degradation…"

They also aren't showing the harness called ‘pi’ which generally tops results (not only with ‘open’ models), and is consistent with Anthropic's recent "works better when we don't stuff 100k system prompts into context" about Opus 5. Recent models do better with less jank trying to prescribe behavior.

So then one wonders: why is this post written to say you should use a meta router but no mention that's offset by the cache busting, and show developers cost savings but no mention that Anthropic and OpenAI both have developer-facing utilization dashes already?

Perhaps it's so engineers can show enterprise procurement why they want to buy exactly what Databricks happens to have for sale.

Terretta··on DeepSeek V4 Flash 0731
Rework is expensive.

Tell your PjM who should tell your PgM who should tell your PdM, all the PMs...

Maybe if "the business" sees it is true of LLMs, they might believe it's true of giving better context to engineers up front then giving them time to think and prototype (thinking tokens are an answer prototype).

Terretta··on A year of fighting scrapers on my 1.5 million-page website
I was on the internet before HTML and long before Mosaic...

I agree with one aspect of the narrative you're saying, his idea was held as being for «documents». To be sure, document was more abstract than document on a Mac.

Either way, I'm very sad it mostly turned into animated brochures instead.

But the reason styles were separate, the reason everyone talked about semantics, was always about the universal knowledge DAG and enabling machines to help us navigate and retrieve it. It's why so many of the early agents referenced navigation (Spyglass, Navigator) or the interconnectedness of things (Mosaic).

So, ok, big document “store”, but that's a lifeless noun. The information you are looking for, the dots connected for you surfacing what you didn't know, that's a living growing thing, an agentic retrieval savvy knowledge engine, distributed for curation and resilience.

The librarian was always to be a machine or many, on our behalf.

Terretta··on A year of fighting scrapers on my 1.5 million-page website
you know what a browser is called by the web site? check the header that tells the version.

USER AGENT

not user, an agent on behalf of the user.

the web was intended to be usable by agents belonging to users. in our path of the multiverse, the main agent we think of happens to be live interactive browser. but that need not have been, nor will it be in the future, the dominant USER AGENT.

for a glimpse at one possible futureverse, check out what the home assistant community is up to, how they assemble then update the ambient information displays on their walls. their USER AGENTS are doing what most HN-style "hackers" dreamed of reading scifi as kids.

the alternative is all your in home information owned by corpos when the info should be from user agents not corpo feeds. if you want to vote this idea down, you might be a corpo. :-)

Terretta··on That time when I failed the Microsoft interview
Not only Internet. It's held view among risk-management-heavy enterprises, some of which might even insist, beyond the claim in this thread, that "any anbility assessment is illegal". To be fair, maybe someone in HR read it on Facebook or LinkedIn, showed risk management a (doesn't have to be real) legal risk they could head off. So they ban people evals, even for skilled trades.

Not even brain teasers or IQ. Just: can applicant FizzBuzz? Verboten!

This is how, in a mass job application world, enterprises end up with >80% of coders, all making 6 figures, that can't FizzBuzz.

A hack to get the enterprise to assess is find the third party SWE test providers to big brand logos the board recognize, brands under the same risk governance / regulatory regimes, and ask "what do we know they don't?" First, the board know and respect those brands. Second, the question makes the board consider what they think about those in charge of the failing capabilities internally. This is something now both easy for the board to discuss, and obviously done by good references. Ok, let's try empirical evals.

Countless such broken record warranting beliefs clanging around 100k employee enterprises. McKinsey, BCG, PWC, KPMG -- all they need to do to justify 8 figure bill for the year is undo any one of them.

Terretta··on YInMn Blue: The first new blue in two centuries
Right, per this thread's link, seems to be circa 2009:

“In 2009… what emerged from the furnace was a brilliant blue…”

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And per the previously link...

pacificmint on Jan 29, 2021 | next [–]

Previous discussions:

- https://news.ycombinator.com/item?id=25807199

- https://news.ycombinator.com/item?id=25886601

Two articles about the discovery:

- https://www.npr.org/2016/07/16/485696248/a-chemist-accidenta...

- https://www.bloomberg.com/features/2018-quest-for-billion-do...

Terretta··on Qwen3.8-Max: A New Bar for Coding and Cowork
SmartConnections but heads up, Connections Pro asks $300/year, or, more for the plugin than for an LLM subscription, more than Microsoft Office for that matter.

https://smartconnections.app

Keep in mind Obsidian is open standard JS plugins... You know what can write open standard JS plugins?

Classic which comes first, LLM or the plugin, though. :-)

Terretta··on The tiny holdout building in the middle of Macy’s is back in view
“Hidden by billboards for over 100 years, the tiny holdout building in the middle of Macy’s is back in view‎”

Initial word of headline necessary for comprehension

Terretta··on Logic for Programmers
Check the file extension for a static single page app (SPA).

Is it something like .htcsjs, .hsj, or .HSJ on Windows? Or just .html?

More seriously, seems anything that can render .html handles the other two inline, so calling it HTML even with css and js in it seems fine?

Terretta··on I 4x'd a 367x479 stamp-sized photo through 8 upscaling models
Enlarger's ear lobes are molting!

Most any upsize looks better if you toss hue protected noise back in; you've made good use of that point.

Terretta··on Unitree As2-W
An industrial 15000 mwh 50v lithium pack can run 3 kg, so you could bring 8 hours of spare walking and a solar panel…
Terretta··on Show HN: Writemark, a dependency free web component for inline Markdown editing
FYSA: iPadOS 26.5 user here, cursor keys send the cursor to start of line. Clicking somewhere allows insert at that spot, but then arrows send cursor back to start of line again.
Terretta··on Boox Go 10.3 (gen II) Lumi: First impressions
Rather than all that to turn an e-reader into a tablet, consider a general tablet that's an excellent outdoor/travel e-reader already:

https://daylightcomputer.com/

2004: https://news.ycombinator.com/item?id=40456834

It's not e-paper, it's a different approach called "Live Paper" that's far more practical for everything beyond reading, yet still fantastic in direct sun:

https://www.slashgear.com/1655111/daylight-computer-live-pap...

Pair it with a slotted Macally keyboard for travel with a stand slot and 3+ mos charge:

https://us.macally.com/products/ipad-keyboard-bluetooth-mac-...

This fits in the Daylight computer pouch.

For reading, use Kindle (or any Android reader) in landscape 2 page mode for an experience that's like reading a paperback, or portrait for textbooks/PDFs. Work beautifully in the brightest direct sun, or read with calming firelight colored backlight in the dark.

Runs M365 suite perfectly, so ideal as an all in one.

Terretta··on Qwen-Image-3.0: Rich Content, Authentic Details, Deep Knowledge
> As a visual learner…

This may be a myth. Big paper in 2009, but nobody's proved it's real in the 15 years since.

In a 2009 review paper entitled Learning Styles: Concepts and Evidence, researchers investigated the “meshing hypothesis,” which is the idea that students learn better when instruction is provided in a format that matches their learning style. Their conclusion is a hard pill to swallow. “The contrast between the enormous popularity of the learning-styles approach within education and the lack of credible evidence for its utility is, in our opinion, striking and disturbing,” the researchers wrote. “If classfication of students’ learning styles has practical utility, it remains to be demonstrated.”

2009: https://www.psychologicalscience.org/news/releases/learning-...

2022: https://fee.org/articles/learning-styles-don-t-actually-exis...

APA goes so far as to say (2019) believing in learning styles is detrimental:

https://www.apa.org/news/press/releases/2019/05/learning-sty...

Terretta··on It's getting harder to focus every day
> So how can I regain my ability to focus?

Read.

Not the zennial definition of listen to a podcast – actual books.

Here's how to reboot your reading.

Do this during a break, when you have a couple weeks. Or schedule a couple hours in the evenings. But make the time be a "habit" block that you require yourself to do. (Something else has to give – consider letting your streaming queue get longer for a bit. And replace your HN bookmark with https://www.daemonology.net/hn-daily/ … seriously!)

1. Start with trash, an "airport novel" type with giant print double spaced lines so the short story looks like a proper book. Pure story dopamine.

2. Then one with normal print and single spaced lines with enough substance to engage meta or systems thought as you read, maybe a Len Deighton or Eric Ambler if you're feeling able. Your brain relearns getting to think doesn't actually hurt.

3. Next shift into non-fiction. Something about Norway's heavy water sabotage against Nazi Germany, for instance; or preferably something field-adjacent to your field, with both narrative and knowledge. Re-priming your dopamine to hit from knowledge too.

4. Finally move into your own field, now knowledge you haven't been able to stick with to learn but wanted to. For this read something from a genuine practitioner, not the LinkedIn-fluencer TED talk transcripts in book form that top charts these days. Leveling up is its own reward.

Once you've made it through that, you should (a) be able to read again, (b) be able to focus on semantic processing, (c) regain your ideas to words to ideas mapping necessary for product/platform systems analysis or software engineering.

Importantly, prefer physical books or (“try this one cool trick!”) a full A4 or 8.5"x11" page e-paper tablet turned landscape, set up to read 2 pages side by side. When this is configured right (smallest margins, right font and line size) ending up same size as a paperback. The retention of two pages at a time, and the fewer page turns (fewer, larger, memory chunks) per book, is better for regaining focus and better for improving working memory. The smaller the font you can still read quickly and easily, the better, for the same reason.

Set your black mirror devices out of reach during the time block, don't have the TV on, ideally no music, or (“try this one cool trick too…”) while reading the first book on your list: play music in a language you don't understand but that sounds reasonably close to your own. For English speakers, germanic or romance languages are good. This makes your language centers busy wanting to comprehend the audio channel along with your visual channel, so your brain eats up the book without your mind wandering.

Using the method above, you can work to being able to sit with and absorb hardbound textbooks in just a series of 4 or 5 escalating challenges.

You'll find you regained intraday focus as well.

• • •

PS. Did you update that bookmark? Yesterday's HN Daily happens to be relevant as is so often the case: https://resobscura.substack.com/p/quality-non-fiction-books-...

Terretta··on Why Software Factories Fail (or: harness engineering is not enough)
for synthesis. read the entire whatever in one gulp and boil it down or plan what to do about it.

not for steps.

Terretta··on Show HN: Echo – Fable-level results at 1/3 the cost using open-weight models
> Dogpile was only a good idea while Search Engines were mostly trash.

Precisely.

Terretta··on Apple Private Cloud Compute SoC 3 audit reports
For anyone reading along, both of tptacek's comments are saying the same thing I'm saying. Or I'm saying the same thing he's saying.

Either way, go read his links.

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