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pchristensen

13,562 karma · joined November 6, 2007

Senior Software Engineer at Andela.

email: peter at pchristensen dot com

http://www.pchristensen.com

d13b2ac1c6b22c9a1557ee5a5dd4f41855f65133

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pchristensen··on Court agrees with EFF: Utah's VPN law demands a technical impossibility
Members of the Church of Jesus Christ of Latter-day Saints are indeed Christian.
pchristensen··on Ask HN: What are you reading?
I havent read PSS but I loved The Vital Question and Transformer. It was so much better than a book on the Krebs cycle had any business being. I probably liked VQ better though.
pchristensen··on Ask HN: What are you reading?
I’m also reading Seeing Like a State!
pchristensen··on Updated Google Maps shows destruction of the city of Rafah
Most Middle Eastern Jews were definitely not voluntary migrants in 1948. They were expelled from cities and lands they had lived in for centuries.
pchristensen··on Updated Google Maps shows destruction of the city of Rafah
From how I understand the history, in 1948, the attacking Arab armies from neighboring countries told the local Arabs (Palestinians) to leave the war zone to be safe. But when Israel won the war, those Arabs could not return.
pchristensen··on California farmers are struggling to sell grapes as demand for wine drops
I’d imagine many of them are immigrants that either fled, were deported, or decided not to return for the picking seasons.
pchristensen··on UK military jamming other nations' satellites to defend itself, BBC told
Reminds me of in the Avengers - SHIELD couldn't navigate the helicarrier, and Nick Fury said "Is the sun setting? Then put it on our left!"
pchristensen··on Most people prefer traditional architecture
Several of the referenced studies used award winning modernist buildings, and others used similar size and use of buildings e.g. city halls.
pchristensen··on The Cables That Connect the World
You beat me to it!
pchristensen··on Urban Congestion Pricing and the Response Times of Emergency Medical Services
I don't think you're saying the same thing.

Transportation allows people to live far from where they work, but that's everything from horses to bullet trains.

Free roads allow for dispersed uses but doesn't affect how dense of segregated they are. Beyond the cost and space requirements to park everyone's cars. Zoning is doing almost all the work you're describing - even with the presence of cars and subsidized highways, the built environment would look very different without zoning and with more market forces.

pchristensen··on Urban Congestion Pricing and the Response Times of Emergency Medical Services
Jacksonville (and most of Florida) is extremely low lying with a high water table, so sub-surface construction (basements) and subways are basically impossible.

Structurally, it's a low density, car-based city so light rail (as opposed to busses) requires a lot of up front investment without the land use to justify it. At this point, like many US cities, adding effective transit is a chicken and egg problem with land use.

pchristensen··on Urban Congestion Pricing and the Response Times of Emergency Medical Services
Transit access is what concentrates jobs and creates urban vitality. Highway access has a similar effect but creates corridors and edge city clusters which also drive up land values and cost but are impossible to effectively serve by transit, requiring every single person to drive.
pchristensen··on CDs vs. NIMBY
Props to you both for honesty and understanding the economics.
pchristensen··on CDs vs. NIMBY
I think you might be surprised at what percentage of the residential land in basically every metro area, and even percentage of all land in the metro area, is zoned for SFH only[1]. In the USA, he last century of development was zoned for SFH, and there's not a budget or state capacity to build sufficient transit out to the exurban areas where there is land for new neighborhoods.

[1] Here are some for reference: City / Metro Area Residential Land Zoned Single-Family Only (%) - San Jose, CA 94% - Arlington, TX 89% - Charlotte, NC 84% - Seattle, WA 81% - Chicago, IL 79% - Portland, OR 77% - Los Angeles, CA 75% - Minneapolis, MN 70% - Washington, D.C. 36% - New York City, NY 15%

Seattle, Chicago, and Los Angeles are surprisingly high, but hundreds of square miles of SFH offsets a lot of lakefront high-rises.

But this is the whole reason people complain about NIMBYs - there are no other backyards left!

pchristensen··on How does IKEA come up with names for its products?
That is the correct translation, well done!
pchristensen··on Anthropic's ‘watermark’ text adulteration in Claude is a perversion of writing
He's a professional writer. As the article says, even if you write your own words, this is still a problem with proofreading, copy-pasting references or quotes, and "AI checkers".
pchristensen··on Letter to Governor Abbott on responsible AI infrastructure in Texas
The ability of citizens to restrict or prohibit building in their jurisdiction is extremely strong, basically everywhere in the developed world[1]. There's not much they can do to affirmatively cause things to be built - that still takes capital and expertise - but local controls have stifled many, many, many parts of economic development and greatly skewed the economy.

[1] https://worksinprogress.co/issue/the-great-downzoning/

pchristensen··on Who Is America's Homer?
He’s from NYC
pchristensen··on John Deere owners will get the right to repair equipment under FTC settlement
Definitely Siracusa.
pchristensen··on John Deere owners will get the right to repair equipment under FTC settlement
If you have YouTube Premium, you can use their Gemini AI to summarize videos. I've "consumed" tons more videos since I discovered it, since I can get a good idea from the summary if it's worth actually watching the video.

My overall minutes of YT have gone down, but I probably interacts with 2-3x more videos. Just like skimming on HN!

pchristensen··on US seeks cheaper hunter-killer drones after Iran destroys $1B worth of Reapers
Operations is about 1/4 of the budget ($1.75T), and half of that is DoD. 60% is payments for entitlement programs like Social Security, Medicare, and Medicaid. The remaining 15% is debt service.
pchristensen··on Bonnie Tyler, singer of Total Eclipse of the Heart, dies aged 75
I love this. So many more people associate it with Shrek these days, so all the Johnny 5 comments warm my heart!
pchristensen··on Bonnie Tyler, singer of Total Eclipse of the Heart, dies aged 75
I came here to post this, glad you beat me to it. I pulled a muscle laughing the first time I saw this.
pchristensen··on Holes
I'm excited for them too!
pchristensen··on Ford rehires 350 engineers after AI fails to preserve expertise or train juniors
Ford invested heavily in reliability in the late 2000s - see e.g. https://www.latimes.com/business/la-xpm-2012-apr-15-la-fi-bo...
pchristensen··on San Diego photologs from the 1970s
"prop 13 isn't really changing homeownership periods by very much"

I have heard the exact opposite. If you have a source for that, I'd love to read it. I would specifically be looking for homeownership period vs moving within CA vs moving out of CA.

pchristensen··on AI's Affordability Crisis
I didn't make those numbers up - here's a widely cited source from MIT: https://nutsandbolts.mit.edu/BBJ/EmployeeCost.php

Overhead is not fixed per employee - things like taxes and benefits scale with salary, not to mention the cost of tooling (hardware, software, AI token budget, etc) tend to be higher for higher-compensated employees.

You definitely shouldn't plan your business based on my comment, but you'd be foolish to ignore it.

pchristensen··on AI's Affordability Crisis
A company's fully loaded cost (payroll taxes, insurance, fixed company costs, infra, real estate, etc) is usually about double the employee's salary. Half of $40k is 20k/mo, which is ~$250k/hr. That's a lot but very in-bounds for software engineering salaries.
pchristensen··on San Diego photologs from the 1970s
Porque no los dos?

Zoning limits what and how much is permitted. Prop 13 changes the economics and greatly reduces churn and supply, both for redevelopment and migration.

Prop 13 takes the normal supply problems introduced by zoning and turbocharges them.

pchristensen··on Reading for pleasure is sharply down among schoolkids, report shows
My kids use Libby very often.
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