iiinova — where your digital self keeps evolving

Reposted by Greg Shill

I really wish people would stop trying to convince me that their catastrophism should be reflected by financial markets that clearly don't see it the same way.

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Greg Shill @gregshill.com · 29/09/2026

Stuff like this needs to come with a warning label for normies.

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Greg Shill @gregshill.com · 28/09/2026

Water is an example of something that's done an amazing job and is being recognized more and more.

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Greg Shill @gregshill.com · 28/09/2026

Notably, travel times also did not increase outside the congestion zone. This mirrors what we have seen in other aggregate congestion pricing impacts. For example, it was predicted that drivers would change their routes to avoid the zone, creating new congestion; this, too, did not happen.

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Reposted by Greg Shill

Jake Anbinder @jakeanbinder.bsky.social · 27/09/2026

Richard Scarry predicted this

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Greg Shill @gregshill.com · 26/09/2026

Maybe the next AI model will be able to get my printer to reliably connect to my computer.

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Greg Shill @gregshill.com · 24/09/2026

Private opulence, public squalor: Galbraith (1958), calling for more investment in public goods $1B a mile to extend a metro line to a sparsely-populated area and surrounding the terminal station with a parking lot: exemplary of 2026 transit planning

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Greg Shill @gregshill.com · 24/09/2026

Here’s a total return chart for the biggest bond fund vs. a leading S&P 500 ETF since 2020, with all dividends reinvested. Equities outperforming is the dramatic difference, but don’t sleep on the bond fund having terrible absolute returns (negative, on a real basis).

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Reposted by Greg Shill

Thomas Bamonte @thomasbamonte.bsky.social · 23/09/2026

Even though the Pennsylvania legislature did not pass a long-term solution to the transit fiscal cliff faced by PA transit service providers (unlike the ILGA passing the NITA Act for IL transit providers), SEPTA has released its Accelerate Plan to modernize service. wwww.septa.org/news/acceler...

wwww.septa.org

Accelerate: SEPTA Announces Best-in-Class Vision for the Authority & Region – Southeastern Pennsylvania Transportation Authority

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Reposted by Greg Shill

Star:Line Chicago @starlinechicago.bsky.social · 23/09/2026

Someone smarter than me first said it but the paradox of American urban expressways is that they can only be repaired: the political costs of removal are too high but the financial costs of replacement (after a catastrophic closure, e.g. Embarcadero after Loma Prieta) are also too high

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Greg Shill @gregshill.com · 22/09/2026

Life in Milwaukee moves pretty fast. If you don't stop and look around once in a while, you could miss it.

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Greg Shill @gregshill.com · 22/09/2026

Fake news! (Indiana has not required front tags for 70 years.)

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Greg Shill @gregshill.com · 22/09/2026

Litmus tests can operate in two ways. One is as gatekeeper. But the second, darker role is as moral license. This is characteristic of extremist groups. Group/cult members get a license to transgress, while outsiders doing the same act merely justify their lesser status or even subhuman treatment.

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Reposted by Greg Shill

Julian Davis Mortenson @jdmortenson.bsky.social · 20/09/2026

Raising kids involves a series of incredibly personal and extremely kid-specific choices. It’s important to remember that most everyone is doing their best.

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Reposted by Greg Shill

Chicago Tribune @chicagotribune.com · 20/09/2026

The Tribune and the University of Chicago’s Mansueto Institute for Urban Innovation launched a first-of-its-kind analysis of local data by scraping and collating thousands of pages of reports.

chicagotribune.com

How Illinois, Chicago, Cook County used billions in pandemic aid

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Greg Shill @gregshill.com · 19/09/2026

Icing on the cake (well done, photographer) is the “dog friendly” sticker at bottom right.

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Greg Shill @gregshill.com · 19/09/2026

New favorite form of multimodal transport.

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Greg Shill @gregshill.com · 16/09/2026

Your 40s are for discovering that most structural forces are actually three guys in a trench coat with 6x leverage.

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Greg Shill @gregshill.com · 16/09/2026

When you learn that Bill Fischel has posted a draft of his next local government magnum opus, about counties: “The Origins of American Counties: A Fifty-State Tour of the History and Perseverance of America’s Least Understood Local Governments” bpb-us-e1.wpmucdn.com/sites.dartmo...

static.klipy.com

Seinfeld Celebration

ALT: Seinfeld Celebration

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Greg Shill @gregshill.com · 15/09/2026

DSGE models rule everything around me. (dynamic stochastic general equilibrium)

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Greg Shill @gregshill.com · 15/09/2026

US vs. European wealth composition, top 10%. TLDR, Americans own a lot of stocks whereas Euros own property. Caveat: this understates pensions, but still captures big picture equity mix. Data is from 2023 based on ECB report QT’d👇 (pp. 101 & 104), which I prompted ChatGPT to chart more legibly.

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Greg Shill @gregshill.com · 15/09/2026

The “Europoor” meme is really a comment about wealth composition, not income or levels. “In the United States, the wealth at the top of the distribution is largely held in business and financial assets, such as [stocks], and less in housing than in the euro area.” www.ecb.europa.eu/pub/pdf/ecbu...

ecb.europa.eu

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Reposted by Greg Shill

Paul Goldsmith-Pinkham @paulgp.com · 15/09/2026

New post reviewing Zidar and Zwick's new book, which I loved. paulgp.substack.com/p/who-is-ric...

paulgp.substack.com

Who is rich in America, and why?

A review of “The Everywhere Millionaire” by Zidar and Zwick

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Reposted by Greg Shill

David Schleicher @profschleich.bsky.social · 15/09/2026

❗New Article❗ The Great American Property Tax Freakout! Since 2024, many states have radically reshaped their property tax systems.The changes are an example of a national trend of carving out influential groups from taxation, in this case a majority group: homeowners papers.ssrn.com/sol3/papers....

papers.ssrn.com

The Great American Property Tax Freak Out

There has been a lot of news over the last two years, so it is understandable that neither the mass media nor the legal academy has focused on what is happening

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Greg Shill @gregshill.com · 15/09/2026

Pretty grim that investment advice seamlessly transitioned years ago from recommending substantial allocations to *individual bonds* to recommending *bond funds*, as if they’re just a bunch of bonds bundled together. Here’s the performance of the leading bond ETF during its 20-year life.

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Reposted by Greg Shill

Gabriel M Ahlfeldt @ahlfeldt.bsky.social · 13/09/2026

Spatial-equilibrium modelling now works directly in your browser. Choose a city, draw a policy on the map, and see results by grid cell in near real time. Here is a stylised Crossrail experiment in London. 🧵 sites.google.com/view/ahlfeld...

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Greg Shill @gregshill.com · 12/09/2026

Old enough to remember not just Abandon Biden/Harris and the Johnson and Stein campaigns (supposedly the big Libertarian and Green moments, respectively), but the 2000 Nader campaign. A girl I went to college with voted absentee for him—in Florida. I don’t think she liked the next eight years. Ymmv.

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Reposted by Greg Shill

Abundance Law Society at ASU @abundancelawasu.bsky.social · 11/09/2026

The Abundance Law Society recently held its first event at the Sandra Day O’Connor College of Law at Arizona State University with Professor @gregshill.com. Abundance can be an abstract concept, so Professor Shill approached it through the concrete example of transportation. Thank you, attendees!

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Reposted by Greg Shill

Ken McLeod @kenmcld.bsky.social · 11/09/2026

The National Highway Traffic Safety Administration is currently accepting comments on its Automated Vehicle Framework: www.regulations.gov/document/NHT... Comments are due Sept. 30th Some good comments from @nacto.bsky.social @saferoadsnow.bsky.social and others are in already

regulations.gov

Regulations.gov

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Reposted by Greg Shill

Jeffrey Tumlin 🏳️‍🌈 🌁 @jeffreytumlin.bsky.social · 10/09/2026

Metro Seattle transit FTW! Key elements: - Relentless focus on bus speed + reliability incl RapidRide - Link Line 2 - Line 2 connects to Bellevue and Redmond, where massive ped-oriented growth near stations drove bi-directional ridership More at @theurbanist.org www.theurbanist.org/how-downtown...

Downtown Redmond WA -- image from The Urbanist at https://www.theurbanist.org/how-downtown-redmond-grew-from-sleepy-suburb-to-small-city/

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Greg Shill @gregshill.com · 09/09/2026

When you're solo, the solution is straightforward (noise canceling headphones). But that doesn't work while traveling with family or friends, and it's another small thing making transit more unpleasant relative to car travel.

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Greg Shill @gregshill.com · 09/09/2026

Have now tested this at two airports in person and gotten reports from friends at a few more. It’s good! Way better than what’s offered by the airports themselves, the airlines, and third party sites, IMO. Credit to ChatGPT for all the heavy lifting.

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Greg Shill @gregshill.com · 07/09/2026

✈️ If you’re flying today, try airportwtf.com at the airport and let me know what’s missing! I’ve rolled out several updates to this l’il side project since deploying it Friday. The idea is to give flyers the info they actually want (which I find existing airport maps don’t). Feedback invited.

airportwtf.com

Airport Food Maps, Coffee & Lounges | Airport WTF

Find food, coffee, bathrooms, airport lounges, and more near your gate at 50 U.S. airports. Browse airport and terminal maps.

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Greg Shill @gregshill.com · 06/09/2026

It’s Richard Scarry’s world, we’re just living in it.

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Greg Shill @gregshill.com · 05/09/2026

Made some big updates. It’s been gratifying to hear from some folks that it’s been useful (and where it could be more so). Hope this new version is helpful! airportwtf.com ps keep the feedback flowing

airportwtf.com

Airport WTF

“Where’s the food?” Find food, coffee, bathrooms, airport lounges, and more near your gate at the 50 busiest U.S. airports.

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Reposted by Greg Shill

Jake Anbinder @jakeanbinder.bsky.social · 04/09/2026

People with JDs can be president but the president cannot be, in the essential sense, a lawyer. For proof, consider that the last one of those was Nixon.

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Reposted by Greg Shill

Blair Lorenzo / The Fox and the City @thefoxandthecity.com · 04/09/2026

This is great! An amazing tool when you find yourself in an airport you don't know and don't want to deal with the awful online guides of most airports. Well done!

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Greg Shill @gregshill.com · 04/09/2026

✈️ Traveling this weekend? I created a tool to make your airport time less annoying. Would love feedback. airportwtf.com

airportwtf.com

Airport WTF

Find food, coffee, bathrooms, and airport lounges near your gate at the 50 busiest U.S. airports.

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Greg Shill @gregshill.com · 04/09/2026

Ran out of tokens twice today on a side project. Woof.

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Reposted by Greg Shill

Jeffrey Lin @jeffrlin.bsky.social · 03/09/2026

What’s the value of a compact city? How would we know? Check out our latest Densely Speaking interview with the great Nina Harari 👇

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Greg Shill @gregshill.com · 02/09/2026

Adventures in non-linearity, aka it's lonely at the top. As a large airport, for example, Dulles is tiny; 1/3 the passengers of Denver, barely more than SLC and San Diego. en.wikipedia.org/wiki/List_of...

en.wikipedia.org

List of the busiest airports in the United States - Wikipedia

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Greg Shill @gregshill.com · 02/09/2026

With a giant corpus of text, the temptation to automate is natural. But anyone attempting this manually would need to first identify the relevant primary and interpretive texts. AI requires this too; the trouble is that gathering the materials is a major undertaking (as Sara/Zoning Atlas team show).

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Greg Shill @gregshill.com · 02/09/2026

Last sentence of the screenshot undersells it, but hopefully the idea comes across that bond funds lose value when yields go up. To the typical investor holding a treasury or corporate bond (not fund) to maturity for income, these price swings don’t matter. www.wsj.com/finance/inve... on n

There is a difference between holding individual bonds and holding bond funds. An individual bond has a fixed maturity date, so as long as the issuer doesn’t default or call the bond early, you are contractually guaranteed to receive 100% of its face value at maturity, regardless of price fluctuations along the way.

In contrast, a bond fund is an open-ended portfolio that continuously buys and sells bonds to maintain a target duration, which is a measure of a bond’s sensitivity to interest rates. Because it never matures as a single unit, rate spikes can lead to prolonged paper losses, or realized losses if you sell during a down cycle.

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Greg Shill @gregshill.com · 01/09/2026

As a data point, I gave a talk to a standing-room-only gathering of the new Abundance Law Society at ASU today. I doubt I (or the Washington Post) was the reason for the crowd; rather, I think some share of youths are mad about the cost of housing especially & find value in the abundance framework.

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