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mattvr

117 karma · joined April 11, 2023

https://orgsoft.org
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mattvr··on Ask HN: What are you working on? (September 2026)
Yes! I’m working on adding that to the app in the next update.
mattvr··on Ask HN: What are you working on? (September 2026)
Optimem, a spaced repetition learning app that aims to be a user-friendly alternative to Anki. Or a more effective version of Duolingo.

https://optimem.org

mattvr··on More than half of adults in U.S. say they lack basic statistical understanding
The question asked as part of the survey: “how well do you understand p-values?” Most scientists may not even be able to pass truthfully.

https://en.wikipedia.org/wiki/Misuse_of_p-values

mattvr··on Kimi K3 Is Competitive with Fable; Kimi K3 and Fable Is SoTA
Anyone have routing harnesses like this describes with Claude Code? Or other good routing platform recommendations?

(yes, I know this article is about an oracle router)

mattvr··on 1worldflag: A blue dot on a transparent background
Is there information on the license of this flag? Not how/if clear you can reproduce it legally.
mattvr··on Microsoft Wants to 'Make People Addicted' to Its New AI Assistant
This helps explain the dissonance in Microsoft's recent Humanist Superintelligence article about creating "AI companions for everyone".

https://microsoft.ai/news/towards-humanist-superintelligence...

In an otherwise pleasant, humanist framing, they jarringly conclude Microsoft's primary AI application will be putting people into parasocial AI relationships for profit.

mattvr··on U of T researchers demonstrate AI worm could target any online device
Ah yes, viral AI gain-of-function research in a secure lab. What could go wrong?
mattvr··on Grafeo – A fast, lean, embeddable graph database built in Rust
It implies high performance, reliability, and a higher degree of mastery of the developer.

(Which may not all be true, but perhaps moreso than your average project)

mattvr··on 404 Deno CEO not found
Deno Deploy is actually an excellent product.

My choice ranking is Deno Deploy > Fly.io > AWS for new projects, depending on complexity and needs. They also have a new Deno sandbox feature which is great for running untrusted code, AI agents, etc.

The real question is can they adapt to customer feedback fast enough, focus priorities, adequately market & grow, make it profitable, etc. Bumpy road but definitely not doomed.

[0] https://deno.com/deploy

mattvr··on WebTransport is almost here to allow UDP-like exchange in the browser
In a nutshell, ideally `peer.connect(remoteId)`. An API like peer-js/simple-peer. And symmetric negotiation would be great as well.

WebRTC should be the universal networking primitive for the next phase of the web, but the API exposes too many implementation details – its abstractions leak.

This plus the overall weight of integrations limit mass adoption by developers.

mattvr··on WebTransport is almost here to allow UDP-like exchange in the browser
While WebTransport is promising, it's limited to client-server communication unlike WebRTC.

WebRTC supports peer-to-peer UDP connections as well. Thus it's better for use cases like low-latency games, video calling, and secure direct communication between devices.

A better push might be to make WebRTC more simple and modern, but I'm not sure if any standards committees are working on this yet.

mattvr··on JavaScript Just Leveled Up: ES2025 – You'll Fall in Love With
I believe this article is largely wrong and misleading.

Pattern matching is still Stage 1, meaning it’s not a standard: https://github.com/tc39/proposal-pattern-matching

Pipeline operator is Stage 2 and won’t use the “|>” syntax: https://github.com/tc39/proposal-pipeline-operator

mattvr··on Solarpunk is happening in Africa
The detectors are wrong. Here’s the thing: AI slop has a distinctive structure that many of us spot from a mile away.

The kicker? This setup-punchline format sets off a red alert for astute readers’ AI detectors.

This isn’t just AI slop, it’s an industrial AI sludge factory.

(note: this was ironically written by a human)

mattvr··on JSON River – Parse JSON incrementally as it streams in
You could also use JSON Merge Patch (RFC 7396) for a similar use case.

(The downside of JSON Merge Patch is it doesn't support concatenating string values, so you must send a value like `{"msg": "Hello World"}` as one message, you can't join `{"msg": "Hello"}` with `{"msg": " World")`.)

[1] https://github.com/pierreinglebert/json-merge-patch

mattvr··on Just let me select text
Many mobile apps encounter this because React Native still doesn't have a good solution for selectable text [0].

Workarounds exist [1], but aren't great for text that spans multiple lines and styles.

[0] https://github.com/facebook/react-native/issues/13938

[1] https://github.com/bluesky-social/react-native-uitextview

mattvr··on It's time for modern CSS to kill the SPA
It does appear to be supported by iOS Safari 18.2+, which is the majority of iOS users.

https://caniuse.com/?search=view%20transitions

mattvr··on In restaurants, We need a new way to signal that we're ready to pay
At Case Bonita in Denver, you have a flag on your table you can raise to signal to the waiter to come over.
mattvr··on Show HN: I made Confetti: a configuration language file format
This exists: jsonc – and it's somewhat widely used, such as for VS Code configuration.
mattvr··on Solarpunk
Also check out the unbranded version: https://www.youtube.com/watch?v=UqJJktxCY9U
mattvr··on In memoriam
Should order this list by number of affected rather than alphabetical IMO. The 275K monthly user platform is almost hidden relative to the 49 and 300 user examples.
mattvr··on Show HN: I Built a Reddit-style Bluesky client – still rough, but open to ideas
Excellent idea! I'd focus on the open-sourcing and community elements (e.g. creating feeds) so it can get traction, rather than features like Markdown and longer posts at this stage.
mattvr··on Show HN: Play with real quantum physics in your browser
Hi real quantum physicist, yup, you pretty much got it. This is a prototype demo of the concept – and is using real IBM quantum computers. The queues are between 10s and 10min generally.

This is explained very closely to what you've said in the "Technical details" help section. Occasionally you'll get a real-time result. I'll check out the links you sent next, thank you!

Do you think qBraid could support this with more real-time latency?

mattvr··on Show HN: Play with real quantum physics in your browser
Sorry about that. I toned down the animation and fixed the infinite spin issue – curious if it's more comfortable now.
mattvr··on Show HN: Play with real quantum physics in your browser
Updated to "favors one side 51%".
mattvr··on Show HN: Play with real quantum physics in your browser
You are precisely right.
mattvr··on Show HN: Play with real quantum physics in your browser
Yes, sorry, server was a bit overloaded. It should be more reliable now.
mattvr··on Show HN: Play with real quantum physics in your browser
Hey HN! Creator here. Sorry for the downtime and dizzying spinning coins.

I was surprised to see this on the frontpage this morning and the scale is pushing the limits of our quantum randomness generator

It should be working again now as I'm pushing fixes. Thanks for your patience.

mattvr··on Don't use cosine similarity carelessly
You could also work around this by adding a scaling transformation that normalizes and centers (e.g. sklearn StandardScaler) in between the raw embeddings — based on some example data points from your data set. Might introduce some bias, but I’ve found this helpful in some cases with off the shelf embeddings.
mattvr··on Guten: A Tiny Newspaper Printer
How about showing all the money you spent/earned in the previous day, in one personalized receipt?
mattvr··on Orbit by Mozilla
Hey, thanks for the critique (this is my product)! Yeah, LLM summarization definitely has its challenges. We've actually spent months optimizing for this:

1. Using latest models (gpt-4o & claude-3.5) which show major improvements in quality

2. Extensive prompt engineering focused on distilling surprising insights vs. pure summarization

3. Structured output format that's easier to parse

Re: transparency - you're right, we need to add more details. I'm new to this and still learning how to communicate this.

Btw, it's free to use 1x/day, and here's an example: https://nuggetize.com/n/claude-shannon-wikipedia-47ca5e5b

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