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Terretta

20,801 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 macOS 27 Golden Gate – Review
heart recovery is one of several headline new features they mention on first run (and in app ref info) will calibrate over time

as often the case when Apple makes its move, their implementations -- while late compared to e.g. Garmin which has had them for years -- purport to be leading accuracy on these features among wearables

Terretta··on Trump rejects call by CEOs of Anthropic, OpenAI and xAI to slow AI down
Very little ‘magic’ seems necessary for those, rather a little less human-in-the-loop team sports with our future, and a little more feedback loop science.

Self-selected ignorance and scrambling seem both correlated and causative.

That said, SOTA machines can't run an office snack bar yet, so it'll be a minute before abundances other than caution.

Terretta··on Nine coding harnesses vs. your laptop
Love the idea…

Except the "one model" is too small for a 64GB Mac much less 128GB, sad since the Q3 is proven less competent.

Offering a Q boost (with no leave behinds) on first run would be a bump worth some vibe coding while.

Terretta··on JetKVM Mini
Perhaps one wishes to remote KVM consoles.
Terretta··on JetKVM Mini
Was posting "Now make it join Tailnets." to the comments then saw your remark.

TY for link.

Terretta··on Astra and Fable still hack on simple variants of alignment evals from 2025
Note that Mac Studio Ultra M3 (or upcoming M5) with 512GB is effective. You don't have to do this work fast, overnight is fine.

Unless trying to use it interactively and adversarially, in which case it's not fast enough plus would be why those of us without our own datacenters will get told we can't have nice things.

Terretta··on Litelm: LiteLLM Without the Bloat
> you forgot about the deps… (… 700Mb)

On the contrary, the readme for this project, `litelm`, is contrasting with the bloat project, `litellm`. This project subty deboats an L.

The bloat (or featuritis) project has the 700mb and 100k+ LOC, this de-bloat has 2k LOC and specifies its only two deps ones most people want as deps (although httpx should be swapped to its successor).

So this response is off base, the 700Mb isn't forgotten, it's been dropped.

Terretta··on Detecting and countering misuse of AI: September 2026
There it is:

"Congress gripped by AI panic after doomsday warnings"

https://www.axios.com/2026/09/11/congress-ai-anthropic-coxon...

Terretta··on Detecting and countering misuse of AI: September 2026
> why do we get a post like this from openAI then immediately after get the same thing from Anthropic and vice versa like it’s a single entity deciding what the next topic is to relay to us simple folk

Not relaying to us simple folk. The message is for government simple folk, amplified and relayed by us simple folk as constituents.

The common element is lobbying, for regulatory capture, to help pull up the ladder.

They don't have to be colluding, they just have to hear the same things from the gov at the same time (as they would), then it goes in media waves beacuse journalists don't as easily get published for a story about one thing as they can if two or more examples make a pattern.

Terretta··on Open Source Durable Objects for Postgres
If what you're doing makes money, the last thing you want is to stop doing the thing making you money. If, instead, it costs you money, don't wait until a usage surge to consider how to handle that – set it up now.

You also don't need any latency in the loop or moving parts that could wrongly interfere with the reliability of making that money.

Fortunately, the last thing this is is "opaque". You have all the observability you need to do what you want to do with unexpected usage.

What AWS (and every CSP) gives you is all the instrumentation and out of band tools to implement your own angel of death, to API kill a runaway thing if that's what you want to do.

You can also find countless TF and CDK patterns for it if you aren't sure how.

But please, no, do not ask to make critical systems subject to the whims of some billing decision enforcer.

The "why did they cut me off" complaints here far outnumber the "runaway bill" complaints.

Terretta··on Searching for the best silicone USB cable
For data transfer performance and reliability in a cable with a white smooth sheath, we go with Cable Matters:

https://www.cablematters.com/pc-1640-180-intel-certified-80g...

aka: https://www.amazon.com/Cable-Matters-Thunderbolt-Black-3-3ft...

But we prefer such be braided, so with CalDigit we use this:

https://www.caldigit.com/thunderbolt-5-pro-cable/

https://www.amazon.com/CalDigit-Thunderbolt-5-Pro-Cable/dp/B...

Or with Anker we use this:

https://www.amazon.com/Anker-Thunderbolt-Charging-Bandwidth-...

That said, we mostly use Apple TB5 for fixed work stations where cables don't get lost.

https://www.apple.com/shop/product/mdw94am/a/thunderbolt-5-u...

We avoid gaming brand TB cables and the scrabble letter brands.

Terretta··on Searching for the best silicone USB cable
This article recommending scrabble letter brands seems sketchy.

Anker offers lovely soft silicone sheathed USB-C cables, in black or white and many lengths. They perform for data and do not get stiff or discolor. Our office specifies these unless TB4+ is required.

Terretta··on An investigation into the state of corvid–human relations
This author has their own AM radio Americana narrative style with peculiar flourishes repeated throughout, but it's so refreshing compared to LLMs it's worth slowing down and noticing how they play with the language as the crow does a shiny wire, resulting in far higher perplexity at each bend in phrase than the machines seem capable of no matter the prompt.
Terretta··on Superhuman Attention
Superhuman Attention is required to read prose so stilted it belongs in a traveling circus. Preferably traveling to somewhere else.
Terretta··on Decayfmt – a file format that corrupts itself a little every time you open it
Noticing project name is decayfmt not damagefmt.

Might be visually cooler and a gesture at decayed compute history if the decay pixels land as black and white (1 and 0) instead of color.

RBG noise damage does happen digitally for image damage, while hue protected noise damage is more organic -- a more filmish look. Most people prefer hue protected noise (saturation and lightness variance fine). It's likely this would look older and more decayed given our biased association with film grain.

For this, monochrome noise with a target grey level (e.g. 20% grey) would be visually nice, but the 1s and 0s would be even more old timey computer museum decay.

Terretta··on Z.ai confirms Ox Alpha is a new GLM-series model and will release its weights
The bubbling froth at the open edge is getting user adopted at a crazy pace, by the early adopter persona trying them all within hours to days. This persona loves taking apart and putting together novel things, and telling others.

Fast follower persona clusters around emerging zeitgeist across the tellings. At the moment, arguably that's mostly Qwen for everyday hobbyists, and GLM for those that can run 512GB to 1.5TB of memory. This persona is seeking viable applied results: "I have frontier at home".

The early majority pick things up after models are curated into apps like LM Studio or one's platform app of choice, usually at least one major release behind because it takes that long to choose and package into mass distribution.

This is the step where early majority persona "has no idea" what the parade of weird names is about, they care about qualia of the conversations they try to have.

This persona is, at present, very under-served, and likely to remain so until mass devices can perform feeling like 27B at Q4 large quality better, or workplace devices can achieve a pragmatic utility like 135B at Q8 or better.

Harnesses that work where the workplace persona lives bridge this. This persona doesn't care the Chinese model name, they care "does it code?" For that, the applied harness and model take time to be matched, as JetBrains did harnessing a tailored Qwen 3.6 in the IDE. More efforts like https://www.jetbrains.com/junie/ are needed for the majority persona to perceive value from changing their workflow again.

HN's "job" is better outcomes with less friction at each persona.

Terretta··on Agentic Context Management: Memory and Cost as Architecture Problems
Indeed, and reply to comment seemed a "yes and" -- As with humans.

It's curious how much of these could apply to either:

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

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

And many mechanisms exacerbate issues by entrenching preexisting issues.

Terretta··on New Mac Studio with M5 Max and M5 Ultra
Note that modern Macbook Pros can drive crazy screens.

A Macbook Pro M4 or M5 drives TWO of these at once, well, for equivalent of quad 4K configured as dual super ultrawides:

https://www.samsung.com/us/monitors/gaming/57-inch-odyssey-n...

Per Apple support page, MBP with M5 Max handles:

Two external displays

Two displays up to a native resolution of 8K (7680 x 4320) at 60Hz, 5K (5120 x 2880) at 120Hz, or 4K (3840 x 2160) at 240Hz over Thunderbolt or HDMI

Three external displays

Two displays up to a native resolution of 6K (6144 x 3456) at 60Hz or 4K (3840 x 2160) at 144Hz; plus one display up to a native resolution of 8K (7680 x 4320) at 60Hz, 5K (5120 x 2880) at 120Hz or 4K (3840 x 2160) at 240Hz over Thunderbolt or HDMI

Four external displays

Four displays up to a native resolution of 6K (6144 x 3456) at 60Hz or 4K (3840 x 2160) at 144Hz over Thunderbolt or HDMI

https://support.apple.com/en-us/101571

PS. Use TB4 or TB5 dock from Cal-Digit (match the TB version of your mac), or this or one of the rebranded versions of the same OEM: https://www.owc.com/solutions/thunderbolt-dock, or an Ivanky Fusion dock if you want to go nuts with up to SIX displays, Quad 6K@60Hz and Dual 4K@60Hz:

https://www.amazon.com/Thunderbolt-Monitor-Docking-Station-A...

Terretta··on New Mac Studio with M5 Max and M5 Ultra
Yes, and..

Just Tailscale into the Studio from iPad Pro 13" with magic keyboard and Kit Knox's rootshell:

https://github.com/kitknox/rootshell

Note that the iPad Pro can also drive a 4K second screen if you like, and most anything else a Macbook with a single port could drive.

Why not Macbook Air? Because the iPad Pro is also a tablet, touch screen, and 5G...

Terretta··on Canada suspends trade negotiations with USA and match tariffs dollar for dollar
> “motivated entirely … to stuff his pockets”

Someone's pockets, must be gnomes:

• PHASE 1: COLLECT UNDERPANTS. (tariff "foreign" goods desired by Americans, collect upon import from companies, clarify spiked prices experienced by consumers ‘entirely’ due to prior admin policies)

• PHASE 2: … (let simmer)

• PHASE 3: PROFIT. ("return" tariff costs to companies)

Terretta··on Six principles for evaluating cognitive capabilities in AI models
Worth reading the substance behind each of these:

Principle 1: Be aware of your own anthropomorphic cognitive biases.

Principle 2: Be skeptical of others' (and your own) hypotheses. Design control experiments for possible alternate strategies that could produce the observed behavior.

Principle 3: Design novel variations of stimuli or benchmark items to test robustness and generalization.

Principle 4: Be curious about mechanisms underlying performance.

Principle 5: Consider performance versus competence.

Principle 6: Analyze failure types, and embrace “negative” results.

Terretta··on The Joy of Why (podcast): Are We Thinking Correctly About AI Intelligence?
Computer scientist Melanie Mitchell discusses why artificial intelligence doesn’t “think” or “reason” like humans, and how we can create better methods for measuring machine cognition.

Transcript, with podcast audio for download, Apple, Spotify, or direct stream.

Terretta··on Launch HN: Bullet (YC S26) – A Faster Coding Agent
Meanwhile, Cerebras running Sol at 750 tokens per second, the harness "speed" becomes irrelevant compared to making better use of results from insta-Sol.
Terretta··on Show HN: Capto – alerts when a background job goes quiet, with breadcrumbs
not a good look the comment posted by OP here is also LLM written.

anyway, real feedback:

this is one of the longest existing unix service patterns ... what's this doing that the distro and usual suspects don't? (as a startup ISP in early 90's, we found what we needed already in BSD 3 distro)

to browse countless variants, swing by github, search terms like angel, daemon, dead man monitor, etc., although to be fair, most of those will long predate vibe coding, so this one may bring properties those don't

such a tool likely shouldn't be yet another separate SaaS, and the 'narrower' point is why: it should not feed that separate Saas (opposite of narrow), it should feed OTel, PagerDuty, whatever is your "broken things" sink, dash, and comms tree sender ... if you don't have that, do that first, then do this class of thing

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.

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