pchristensen

4 ms·

1.
by pchristensen 14d ago
You beat me to it!
2.
by pchristensen 15d ago
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 ho
3.
by pchristensen 15d ago
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
4.
by pchristensen 15d ago
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 trans
5.
by pchristensen 21d ago
Props to you both for honesty and understanding the economics.
6.
by pchristensen 21d ago
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 S
7.
by pchristensen 28d ago
That is the correct translation, well done!
8.
by pchristensen 1mo ago
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".
9.
by pchristensen 1mo ago
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 tak
10.
by pchristensen 2mo ago
He’s from NYC
11.
by pchristensen 2mo ago
Definitely Siracusa.
12.
by pchristensen 2mo ago
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
13.
by pchristensen 2mo ago
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.
14.
by pchristensen 2mo ago
I love this. So many more people associate it with Shrek these days, so all the Johnny 5 comments warm my heart!
15.
by pchristensen 2mo ago
I came here to post this, glad you beat me to it. I pulled a muscle laughing the first time I saw this.
16.
by pchristensen 3mo ago
I'm excited for them too!
17.
by pchristensen 3mo ago
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...
18.
by pchristensen 3mo ago
"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 w
19.
by pchristensen 3mo ago
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,
20.
by pchristensen 3mo ago
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
21.
by pchristensen 3mo ago
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 tur
22.
by pchristensen 3mo ago
My kids use Libby very often.
23.
by pchristensen 3mo ago
Yes, they showed the Siri app, typing, reviewing conversations etc.
24.
by pchristensen 3mo ago
Did you know that IBM got its start building the control center for the Panama Canal locks? Did you know that lobbying has been the same since at least the 19th century? That 10% of all of France's population invested in their canal co
25.
by pchristensen 3mo ago
It's such a good book! Like any dad reading history, I have been annoying my family for years with fun facts I learned in that book. David McCullough's other books like The Great Bridge (about building the Brooklyn Bridge) are als
26.
by pchristensen 3mo ago
Excavating that much volume would be a heck of an expense.
27.
by pchristensen 4mo ago
There's a lot of opportunity cost to waiting 14 months to build something.
28.
Uber Caps Usage of AI Tools to Manage Costs(bloomberg.com)
4 points by pchristensen 4mo ago|1 comments
29.
by pchristensen 4mo ago
You are mixing up a lot of different factors. 3-4 story apartment buildings gives a net residential density of 30-100 units per acre. Typical 20th century urban development is 3-10 units per acre, with suburban "urban sprawl" at t
30.
by pchristensen 4mo ago
The more density that gets built, the harder it is to improve streets. Construction of the interstates, Haussman's remaking of Paris, etc were immensely destructive, even if they enabled much more legible and prosperous development aft

More ›