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Dan Federman

@dfed.me
713 followers 775 following 654 posts

Infrastructure. Urbanism. Biking. Mobile apps & frameworks.

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Reposted by Dan Federman
Jordan Grimes @cafedujord.bsky.social · 20h
YIMBY Action leads are voting on a recommendation for Prop 45 today. If you or any of your friends are on the fence, I highly recommend reading this great thread. Tl;dr: AB130 already exempted infill housing from CEQA. Prop 45 would just open the floodgates for sprawl.
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Dan Federman @dfed.me · 28/09/2026
This is art
An account replying with an Anthropic 400 because their account was disabled to an article about Anthropic
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Dan Federman @dfed.me · 28/09/2026
Hauled some stuff on the bike. Birthday party supplies got to the park faster than they would have in a car.
A cargo bike carrying 60 cans of water, a cooler, a folding table, six camping chairs, a regulation corn hole set, six outdoor blankets, and much more.A cargo bike carrying ten pizzas
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Clara Jeffery @clarajeffery.bsky.social · 27/09/2026
Absolutely scorching endorsement, bringing serious heat for Weiner and against Chan, but a blast furnace at Pelosi for her role in this race and her true reasons for it. Never read an editorial this heated in Chron www.sfchronicle.com/opinion/edit...
sfchronicle.com
Endorsement: Who should replace Nancy Pelosi in Congress? It’s not even a choice
OPINION: The most intriguing thing about the race between Scott Wiener and Connie Chan to fill Nancy Pelosi’s House seat is that it has become a race at all, the editorial board writes.
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Dan Federman @dfed.me · 14/09/2026
My Nest Protect smoke detector died. And now I am learning that it is normal for a smoke detector to flash bright green every 60 seconds? Who on earth thought a flashing light in a product mandated in bedrooms was a good idea???
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Dan Federman @dfed.me · 10/09/2026
SF is saying a *Walgreens building* must be preserved because something quite notable happened inside the building many decades ago. Put up a plaque! Preserving our built environment is a silly way to honor the past.
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Dan Federman @dfed.me · 10/09/2026
Let SF know what you think of freezing thr Castro in amber here: www.surveymonkey.com/r/qr_code/Pr...
surveymonkey.com
Proposed Castro Historic District Questionnaire
Take this survey powered by surveymonkey.com. Create your own surveys for free.
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Dan Federman @dfed.me · 08/09/2026
Hot take: dog piling on social media educates casual onlookers about a topic.
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Dan Federman @dfed.me · 07/09/2026
When your product absolutely, positively does not increase congestion.
Four Waymo vehicles driving on a residential block  in San Francisco
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Dan Federman @dfed.me · 07/09/2026
Items prices by markets do not suffer from an induced supply problem. Prices counter demand. That’s the point.
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Dan Federman @dfed.me · 06/09/2026
Climate researcher opposes dense housing near transit. Berkeley is not okay.
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Dan Federman @dfed.me · 05/09/2026
Bike lanes are provably good for local businesses. transformca.org/bike-lanes-a...
transformca.org
Bike Lanes are Good for Business, Actually - Transform
Transform staff has continuously heard concerns from local businesses in San Jose about parking availability affecting their bottom lines. They worry that if patrons don’t have a space within direct e...
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Reposted by Dan Federman
Clara Jeffery @clarajeffery.bsky.social · 03/09/2026
Backing Prop G is madness. We have already voted on this TWICE. Chan is the new avatar of SF NIMBYs, always opposed to parks and transit and housing.
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MrCheeze @mrcheeze.github.io · 27/08/2026
when METR used GPT Sol to analyze the transcripts of the attack, it would claim that the attack was fine because *the agent message board* had approved it.
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Bilal Mahmood @bilalmahmood.bsky.social · 13/08/2026
Major news: SF's most infamous empty car wash will finally start to become housing this year. The empty car wash on 400 Divis has become a symbol of SF's stalled housing pipeline. It's no accident that this project will be one of the first housing projects to break ground this year.
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Dan Federman @dfed.me · 20/07/2026
We keep paying more for SFPD and we keep getting less out of them
Graph showing SFPD budget increasing ~70% over ten years
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Dan Federman @dfed.me · 20/07/2026
Why do we subsidize new car ownership more than used car ownership? Doesn’t Sacramento know that used cars are more environmentally friendly than new cars?
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Next door in Silicon Valley @nextdoorsv.bsky.social · 17/07/2026
Chat: Are you voting yes or no on Prop 45, which overhauls CEQA? Does the fact that it explicitly carves out California High Speed Rail so that CEQA continues to slow down CAHSR, change your opinion? oag.ca.gov/system/files...
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WIRED @wired.com · 17/07/2026
Yesterday, WIRED learned that Madison Square Garden was suing us for our accurate reporting. We stand by our work. That’s why we’re removing the paywall from two of the MSG stories they don’t want you to read, making them free for everyone.
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Senator Scott Wiener @scottwiener.bsky.social · 10/07/2026
We need our member of Congress to go to the mat for transit, not obstruct it.
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Thomas Bamonte @thomasbamonte.bsky.social · 09/07/2026
The takeaway for cities: “The best bang for your buck is protected bike lanes,” Moran told Bike Talk‘s Nick Richert. “Really focus on bike infrastructure that’s protected. That’s how you grow ridership. That’s how you diversify ridership.” sf.streetsblog.org/2026/07/08/s...
sf.streetsblog.org
Study: Only Protected Bike Lanes Cause a Real Increase in Cycling - Streetsblog San Francisco
"The best bang for your buck is protected bike lanes... That's how you grow ridership. That's how you diversify ridership."
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Bilal Mahmood @bilalmahmood.bsky.social · 08/07/2026
Did you know SF's conflicting housing laws can make us choose between a bathroom and housing? Our Building code requires a restroom on a rooftop common space. But our Planning code inadvertently requires that restroom count against the building's height limit. Make it make sense!
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Ned Resnikoff @resnikoff.bsky.social · 06/07/2026
As I've said many times before, we need to be much more aggressive about taking away people's licenses. No one was harmed this time, but what about next time?
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Next door in Silicon Valley @nextdoorsv.bsky.social · 06/07/2026
For context, the 9 counties of the San Francisco Bay Area has a population of 7.8M (compared to NYC's 8.5M), covers 6,966 square miles (compared to NYC's 472) and permitted just 16,008 new housing units last year.
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Laura Jedeed @laurajedeed.bsky.social · 04/07/2026
Oh my fucking god
The United States DOJ booth. There is nothing but an empty table and the logo. It's been stripped bare
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David Roberts @volts.wtf · 02/07/2026
This is the most purely anti-American thing I've ever heard a politician say, but the media is too obsessed with 3 DSA candidates winning local elections in NY to pay any attention I guess.
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Dan Federman @dfed.me · 30/06/2026
What on earth are these… pellets? They look like a pile of shit
Piles of… shit? Underneath the eagle head
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Asha Rangappa @asharangappa.bsky.social · 20/06/2026
Did DoD just admit in a court filing that it used xAI's Grok Gov Model to hit the girls' school on the first day of the Iran war? Based on some passages flagged by @rgoodlaw.bsky.social in DoD's recent filing in NAACP's case against X, it looks like it did 1/
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Dan Federman @dfed.me · 12/06/2026
TIL I do not exist!
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Decision Desk HQ @decisiondeskhq.bsky.social · 08/06/2026
Decision Desk HQ projects Nithya Raman wins the second of two spots in the CA Los Angeles Mayor Nonpartisan Primary #DecisionMade: 7:57 PM EDT
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Dan Federman @dfed.me · 02/06/2026
I’m a proponent of the Housing Theory of Everything but even for me this is a bridge too far
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Jane Natoli 🥑🚲🍍 @wafoli.bsky.social · 28/05/2026
How did Noe Valley get gentrified? We just may never know
The City and County of San Francisco's Housing Dashboard showing 147 homes from new construction in Noe Valley in the past 20 years
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Dan Federman @dfed.me · 27/05/2026
Pretty disappointing to see SFPD parked in the bike lane directly in front of their station, just 50 feet from their designated parking lot.
SFPD parked in a bike lane directly in front of their stationSFPD parked in a bike lane right next to their parking lot
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SF Swift Language User Group (SLUG) @sfswift.bsky.social · 26/05/2026
New SF Swift talk: “Agentify Your Swift Repo: Turning Ideas Into Working Pull Requests While Walking the Dog” by @dfed.me How Portola AI uses coding agents to turn ideas into validated Swift PRs. Filmed in spatial video, best viewed on Apple Vision Pro. vimeo.com/1195418169?s...
vimeo.com
Agentify Your Swift Repo: Turning Ideas Into Working Pull Requests While Walking the Dog
Dan Federman, founding engineer at Portola AI, shares how his team uses coding agents to turn ideas into working pull requests, even from a phone while away from the keyboard. The talk covers validat...
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Dan Federman @dfed.me · 20/05/2026
@github.com y’all not posting about security incidents here is…. Not good.
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Reposted by Dan Federman
David Roberts @volts.wtf · 16/05/2026
"Gen Z has a hip new approach to truth, it's called 'believing whatever flatters the priors of you and your peer cohort'!" I'm going to have nightmares about this piece.
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suldrew 🏳️‍🌈 @suldrew.bsky.social · 14/05/2026
Under no circumstances vote for Jane Kim
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Dan Federman @dfed.me · 11/05/2026
IZ is the equivalent to a tax on water production during a drought. I’ve personally seen it kill multiple buildings in my neighborhood. Judging from results, IZ is a tool for reducing housing production. If the government wants the private market to provide something, it should pay for it.
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Jym Dyer 🚲 @jymdyer.bsky.social · 10/05/2026
In 1989 S.F. voted in a %.5 sales tax to extend Muni Metro to Bayview, a Central Subway all the way north, and out Geary. So far only one of those is complete. During the same 36-year timeline, L.A. built its entire metro rail system.
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Bennett Tomlin @bft.wtf · 08/05/2026
This is incredible
Millennium Challenge 2002 (MC02) was a major war game exercise conducted by the United States Armed Forces under United
States Joint Forces Command in mid-2002, running from 24 July to 15 August. The exercise involved both live exercises and computer simulations, costing US$250 million (equivalent to about $448M in 2025), the most expensive war game in US military history.!!]
MCO2 was set in 2007, intended to be a test of future military "transformation" —a transition towards new technologies that enabled network-centric warfare, and providing a more effective command and control of current and future weaponry and tactics. The simulated combatants were the United States, referred to as "Blue", and a fictitious state in the Persian Gulf, "Red", often characterized as Iran or Iraq.
[2][3]MC02 was an experiment mandated by Congress in 2000 to "explore critical war fighting challenges at the operational level of war that will confront United States joint military forces after 2010."[4] The simulation took two years of planning and involved 13,000 troops. The Red force, led by retired Marine Corps Lieutenant General Paul K. Van Riper, used numerous asymmetrical tactics unanticipated by the Blue force; a pre-emptive cruise missile attack sank sixteen Blue
warships and led to the exercise's suspension.
The simulation was restarted with Blue forces fully restored, and Red forces heavily constrained from free-play "to the point where the end state was scripted", 4) resulting in a Blue victory. Van Riper later criticized the cost of the exercise as "wasted". [5]Exercise suspension and restart
At this point, the exercise was suspended, Blue's ships were "re-floated", and the rules of engagement were changed; this was later justified by General Peter Pace as follows: "You kill me in the first day and I sit there for the next 13 days doing nothing, or you put me back to life and you get 13 more days' worth of experiment out of me. Which is a better way to do it?"[2]After the war game was restarted, its participants were forced to follow a script drafted to ensure a Blue Force victory. Among
other rules imposed by this script, Red Force was ordered to turn on their anti-aircraft radar
in order for them to be destroyed, and during a combined parachute assault by the 82nd Airborne Division and Marines air assaulting on
the then new and still controversial MV-22, Van Riper's forces were ordered not to shoot down any of the approaching aircraft. 81[91 Van Riper also claimed that exercise officials denied him
the opportunity to use his own tactics and ideas against Blue Force, and that they also ordered Red Force not to use certain weapons
systems against Blue Force and even ordered the location of Red Force units to be revealed. 11°! The postmortem JFCOM report on MC02 would say "As the exercise progressed, the OPFOR free-play was eventually constrained to the point where the end state was scripted.
This scripting ensured a blue team operational victory and established conditions in the exercise for transition operations."
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Stan Oklobdzija @stano.bsky.social · 06/05/2026
Matt Mahan is pro Prop 13. Instant DQ.
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Elizabeth N. Saunders @profsaunders.bsky.social · 03/05/2026
FFS. Makes Charlie Brown look like an NFL star.
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Dan Federman @dfed.me · 02/04/2026
Well that was some shaking!
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Warren Wells, AICP @warrenjwells.bsky.social · 28/03/2026
Cars, and the whole auto industrial complex, are a vast right wing funding machine. Imo more electeds should think about that when they vote for more highway widenings.
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Governor JB Pritzker @govpritzker.illinois.gov · 25/03/2026
We need to stop prioritizing parking lots over people. Today, I assembled a roundtable to discuss our Building Up Illinois Developments Plan — and the consensus was that we need to act fast. Looking forward to passing it and getting to work in our neighborhoods.
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⚡️🌙 @dystopiabreaker.xyz · 15/03/2026
even under extremely generous assumptions, the “AI is drinking all the water” thing is empirically fake. (infographic from @andymasley.bsky.social )
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Dan Federman @dfed.me · 14/03/2026
Can we get a democrat who spouts the benefits of taxation. Imagine a California even more reliant on billionaires. No thank you.
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paul khruangbin (Dan Lehner) @danlehner.bsky.social · 13/03/2026
it is my life’s mission to find the guy who’s pitching “no income taxes below [seemingly upper-middle-class threshold]” to big Dems electeds and hit him with a whiffle bat until he stops doing that
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Clara Jeffery @clarajeffery.bsky.social · 14/03/2026
This is monstrously fucked up and should be Streisand Effected to the greatest degree possible
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Dan Federman @dfed.me · 10/03/2026
We are being led by a man who has the consistency and mental acuity of GPT 3.5
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