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philip1209

12,700 karma · joined February 26, 2012

https://www.philipithomas.com
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philip1209··on The Brand Age
I petition to rename "feature" as "complication" on software teams.
philip1209··on MacBook Neo
I forgot about force touch as a feature until I read this comment.
philip1209··on Helsinki just went a full year without a single traffic death
We should return to the original double-humped design from Compton:

https://libanswers.wustl.edu/faq/76174?ref=contraption.co

philip1209··on Helsinki just went a full year without a single traffic death
there's a reason speedbumps are called "silent policemen"
philip1209··on Helsinki just went a full year without a single traffic death
Oslo has been doing this for years.

I wrote a blog post about my learnings there - "Engineering over enforcement":

> Enforcement philosophy is rooted in the idea that behavior can be controlled by threatening punishments. Engineering philosophy believes that infrastructure can be designed to incentivize desired behavior. When Oslo sought to reduce pedestrian deaths, it turned to engineers.

> [ . . .] Intersections are one small example where philosophies can diverge. But, as I learned in Oslo, engineers have a whole toolkit of methods to make cities safer. Bumping out a curb slows down turning speeds and protects pedestrians. Bike lanes can be safer by being raised above the street instead of relying on a painted barrier. Limiting how far cars can see ahead of them slows them down. Behavior can be designed rather than just enforced, and in aggregate these small changes can make a city safer.

https://www.contraption.co/engineering-over-enforcement/

philip1209··on iPhone 17e
Same. Many developers are "desktop"-native for their work and reading-focused for their media, so they don't value the gauche pocket TV-era of phones.
philip1209··on Ask HN: Who is hiring? (March 2026)
Chroma | ONSITE - San Francisco | Full-time | https://trychroma.com

Chroma is the open-source search database for AI applications. It supports dense vector, sparse vector, regex, and full-text search. We support local, single-node, and cloud hosting.

We're a team of 14, all engineers today. We work in Rust, Python, Typescript, and Go.

We're hiring for these areas:

- Account executive (founding)

- Database storage engineer

- Distributed systems engineer

- Platform engineer

- Product engineer

- Product designer

Learn more and apply here: https://www.trychroma.com/careers

philip1209··on Warren Buffett dumps $1.7B of Amazon stock
Warren Buffet retired. This is Berkshire Hathaway.
philip1209··on The next steps for Airbus' big bet on open rotor engines
Interesting - I'm curious to learn how ETOPS ratings apply to open rotor engines. Any experts can chime in?
philip1209··on Ask HN: Who is hiring? (February 2026)
Chroma | ONSITE - San Francisco | Full-time | https://trychroma.com

Chroma is the open-source search database for AI applications. It supports dense vector, sparse vector, regex, and full-text search. We support local, single-node, and cloud hosting.

We're a team of 14, all engineers today. We work in Rust, Python, Typescript, and Go.

We're hiring for these areas:

- Account executive (founding)

- Database storage engineer

- Distributed systems engineer

- Platform engineer

- Product engineer

- Product designer

Learn more and apply here: https://www.trychroma.com/careers

philip1209··on Self Driving Car Insurance
I don't have a car so I don't know what is normal. i just went through the lemonade quote process. (I have a license and my record is clean, though - so there shouldn't be any high-risk flags.)
philip1209··on Self Driving Car Insurance
I was curious what the break-even is where the insurance discount covers the $99/mo FSD subscription. I got a Lemonade quote around $240/mo (12k mi/yr lease on a Model 3), so 50% off would save ~$120/mo - i.e. it would cover FSD and still leave ~$21/mo net. Or, "free FSD is you use it".

I believe, at the end of the day, insurance companies will be the ones driving FSD adoption. The media will sensationalize the outlier issues of FSD software, but insurance companies will set the incentives for humans to stop driving.

philip1209··on Deaths Linked to AI Chatbots
These are obvious extremes.

How many people are stuck in the middle, having less extreme beliefs reinforced by a sycophantic AI?

I've started to hear whispers among friends that there are many founders stuck in loops of "planning" with AI, reinforcing banal beliefs and creating schizophrenia-like symptoms.

philip1209··on Ask HN: How are you doing RAG locally?
I run a Mac Mini home datacenter [1]. I've been using Chroma, Qwen 0.6B embeddings, and gpt-oss-20b to build a search agent over my blog.

[1]: https://www.contraption.co/a-mini-data-center/

philip1209··on Ask HN: Share your personal website
https://www.philipithomas.com - personal website

https://contraption.co - personal blog

philip1209··on Cowork: Claude Code for the rest of your work
This is cool, but Claude for Chrome seems broken - authentication doesn't work and there's a slew of recent reviews on the Chrome extension mentioning it.

Sharing here in case anybody from Anthropic sees and can help get this working again.

It may seem off-topic, but I think it hurts developer trust to launch new apps while old ones are busted.

philip1209··on Cloudflare CEO on the Italy fines
"Show me the incentive, and I'll show you the outcome." - Charlie Munger
philip1209··on Claude Code On-the-Go
This is cool, but does everybody have enough work for multiple agents in parallel?

I feel like I'm limited by writing specs for agents, then by reviewing their work.

I typically spend 30-60 minutes writing a spec, then the agent runs for 30-60 minutes, then I spend 30-60 minutes refining code/ui/etc before putting up a PR, then another 30-60 minutes waiting for CI + addressing automated + human code review feedback.

philip1209··on Ask HN: Who is hiring? (January 2026)
Chroma | ONSITE - San Francisco | Full-time | https://trychroma.com

Chroma is the open-source search and retrieval database for AI applications. It supports dense vector, sparse vector, regex, and full-text search. We support local, single-node, and cloud hosting.

We're a team of 14, all engineers today. We work in Rust, Python, Typescript, and Go.

We're hiring for these areas:

- Product design

- Production engineering

- Platform engineering (Rust)

Apply here: https://jobs.ashbyhq.com/trychroma/9ed3aee8-07dd-44e3-9ca1-d...

More details at: https://careers.trychroma.com

philip1209··on Show HN: I added a print edition to my indie blog
I use https://lob.com - it's a YC co that offers an API for letter printing+mailing.
philip1209··on Show HN: I added a print edition to my indie blog
Thanks for sharing!

Lob.com is a powerful tool - I think more people should experiment with it. I know Robin Sloan did an experiment a few years ago that used GPT-2 to send poetry to people via Lob mail. There's something so cool about APIs that create actions in the physical world.

philip1209··on Show HN: I added a print edition to my indie blog
What's old is new again. I wanted to share an experiment I built for my blog: a print edition, delivered to physical mailboxes.

This idea was inspired by Craig's "Between Two Mountains" pop-up. As those emails accumulated in my inbox, I wanted to print them out so I could carry them to a coffee shop. That sent me down a rabbit hole, and I ended up building a printing system for my own site.

Sharing because I think it's a fun idea that I hope more blogs embrace. And, it's built on the YC company Lob.

philip1209··on A $20 drug in Europe requires a prescription and $800 in the U.S.
What's to stop congress from passing a blanket "most favored nation" law for VA + medicare on all pricing, inclusive of insurance rates and discounts? Seems like it would be fair and useful.
philip1209··on Personal blogs are back, should niche blogs be next?
Or put a Mac mini in your living room: https://www.contraption.co/a-mini-data-center/
philip1209··on NTSB Preliminary Report – UPS Boeing MD-11F Crash [pdf]
I'm presenting it "useful not true" - not an RCA.
philip1209··on NTSB Preliminary Report – UPS Boeing MD-11F Crash [pdf]
Originally explained on the blancolirio channel on YouTube -

The timing and manner of the break make a lot more intuitive sense when you consider that the engine is essentially a massive gyroscope. As the plane starts to rotate, the spinning engine resists changes to the direction of its spin axis, putting load on the cowling. When the cowling and mount fail, that angular momentum helps fling the engine toward the fuselage.

philip1209··on iPhone Pocket
My iPhone 13 mini broke last week and I was pleasantly surprised that AppleCare replaced it. "4 more years!"
philip1209··on OpenAI’s promise to stay in California helped clear the path for its IPO
Interesting - this reminds me a lot of the story with Cisco: for decades they remained a California C-Corp while many other companies reincorporated in Delaware. I once heard a lawyer say “all my clients are Delaware C-Corps except Cisco, and their reason is political.”

Eventually Cisco did indeed buckle in 2021 and reincorporate in Delaware . . .

philip1209··on More random home lab things I've recently learned
Good reminder for me to set up a UPS for my home lab before I go on vacation. . .
philip1209··on Doing Rails Wrong
Related: "Why Ruby on Rails still matters" https://news.ycombinator.com/item?id=43130546

I wrote that post about a similar sentiment - that lag is a feature instead of a bug in Rails framework development.

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