Joe Fish

Joe Fish

@sadbusdriver.bsky.social

PhD student doing urban econ and industrial organization at Duke. Former highest paid cashier in the Midwest; former RA at Eviction Lab; Macalester College. Not a real bus driver

923 followers527 following2K posts

The thing with public housing renovation discourse is that — even ignoring the many opportunistic NIMBYs— the following are true: 1. Renovations need to happen 2. There are understandable tenant concerns around right to return 3. Renovations still need to happen 4. If not zohran than who?

I did at one point have a galaxy brained idea: let tenants choose the private companies who sometimes manage RAD converted public housing. I think the issue is that you’d have to align the maintenance horizons of current residents and the building owners. Although this isn’t as bad as with condos

apropos of vibes, the big category baskets that make up the CPI haven't changed much. If anything, healthcare and housing have gotten more weight over time. where there has been change, it's been in subcategories you could do a "fixed basket" CPI and it'd load up on car stuff (gas, insurance, etc)

Here's a fun way to show how not true this is: of the 150 densest cities in California and Texas (min 50K people), 137 of them are in California

William B. Fuckley@opinionhaver.bsky.social

Californians pretend they live in the city and Texans pretend they live in the country, the suburbs where people in both states actually live are largely identical

new follow-up to the "supply constraints dont explain house price growth" paper that's been bopping around for a few years. in this version, they do explain housing price and quantity growth! haven't read so can't vouch. @michaelwiebe.bsky.social have you gone through this one?

dallasfed.orgSupply Constraints Do Explain House Price and Quantity Growth Across U.S. CitiesThis paper shows that the findings in a working paper by Louie, Mondragon and Wieland (2025) do not hold up. The authors model the effect of supply constraints on new housing supply (proxied by permit...

my meta commentary is that: 1. existing supply elasticites aren't great 2. thinking of a singular supply elasticity is a bit of a fools-errand; they change over time and are sensitive to aggregation 3. supply elasticites are still better than what think tanks/cities use for their projections

real estate professionals often have "does a fish know whether it's in water?" syndrome. they know their environment well; theyre much less helpful on thinking through large changes this is why, while it's always good to take with industry insiders, it's also good to have studies and academics.

Joe Fish@sadbusdriver.bsky.social

what happens is people say "if rents fall then developers stop building" which is a statement about a fixed supply curve. This is not, of course, YIMBYism, which is about a *shift* in the supply curve such that more stuff pencils *at a given rent*. dont reason from price changes exhibit 9

obligatory friends don't let friends use Numbeo. Here's what's happening: 1. most of numbeo's "quality of life" index is prices. it has each of purchasing power, cost of living, and price:home ratios 2. the graphic says it drops these. what's left is healthcare, pollution, commutes, and climate

Ben Raderstorf@raders.bsky.social

Sacramento is, by these metrics, the best value and some of the highest quality of life anywhere in the west. California incomes and sunshine with Portland’s prices and Denver’s access to nature is I guess a ranking-friendly combo?

needless to say this is a bad index. LA and NYC rank bad either because the author didn't drop all the price data or because they have bad commutes and bad air quality (and bad healthcare?) which is true, but also misses all the things that makes LA and NYC great

Joe Fish reposted

Harris PhD student Jacob Herbstman has an important working paper: The first I've seen to rigorously quantify the costs of aldermanic prerogative in Chicago. More stringent alders -> reduced permit activity and lower density, which means less housing supply and higher housing costs in Chicago.

i think these net worth breakdowns are kind of dumb tbh. there's two questions here for the under 35 group: 1. why did wealth skyrocket from 2019-2022? (not shown by WSJ) 2. why did wealth decline from 2022-2025 turns out it's a mix of changes in homeownership, used car prices, and house prices

Jake Grumbach@jakemgrumbach.bsky.social

New Fed estimates of wealth by age are out. Under-35 wealth dropped 23% over these three years www.wsj.com/economy/affl...

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so the, imo correct, read is that the cohort under 35 in 2022 -- people from like idk ages 32-35 in 2022 -- got super lucky with rates and home prices. less than "wealth collapsed for young people". eg if you draw a straight line from 2019-> 2025 stuff looks pretty good

The question is more what this looks like in 2028 if there’s been a pronounced period of high interest rates that, possibly, could result in persistently lower homeownership rates. I think whether this happens depends on mortgage lock in

i think these net worth breakdowns are kind of dumb tbh. there's two questions here for the under 35 group: 1. why did wealth skyrocket from 2019-2022? (not shown by WSJ) 2. why did wealth decline from 2022-2025 turns out it's a mix of changes in homeownership, used car prices, and house prices

Jake Grumbach@jakemgrumbach.bsky.social

New Fed estimates of wealth by age are out. Under-35 wealth dropped 23% over these three years www.wsj.com/economy/affl...

the car stuff is obviously goofy; a $6k increase in wealth because there was a car shortage is not a super helpful metric of wealth. the homeownership rate changes are interesting but a bunch of this is: 1. low rates pulled people forward into homeownership 2. those ppl built equity super quick

Are people really going to bat for cosmetology programs? Aren’t those mostly like: 80% Private companies of dubious value 20% Community and technical colleges and some state schools

Even the industry publications don’t really go to bat for them: “They graduate at higher rates and with less debt” (note nothing about earnings) And “there are some schools that need reform” And “our students make more than the min wage and general labors”

Feels very similar to the building codes takes you sometimes see where reform is described as neoliberals selling out safety. But the codes are all done by a private monopoly! Kinda insane setup and antithetical to what I imagine critics imagine the status quo to be

eventually everyone in Will Stancils mentions becomes a Rational Expectations true believer. Do people know trends in real wages? No. But they can compute a counterfactual that adjusts the path of wages in the economy based on what would have happened had the labor share of income remained constant

Here's another version: Because of the glory of the home mortgage disclosure act, we can see the income of homebuyers with mortgages. Within the same county/neighborhood/neighborhood and adjusting for unit characteristics, condo buyers are poorer than single family home buyers. it's a starter home!

Joe Fish@sadbusdriver.bsky.social

the thing with luxury condos is that they're mostly a myth. 1. within the same county, condos sell for 35% less than single family homes 2. within the same neighborhood, they sell for 43% less 3. within the same neighborhood and adjusting for some quality characteristics, they sell for 21% less

the thing with luxury condos is that they're mostly a myth. 1. within the same county, condos sell for 35% less than single family homes 2. within the same neighborhood, they sell for 43% less 3. within the same neighborhood and adjusting for some quality characteristics, they sell for 21% less

this was inspired by strongtown's weird anti condo fixation. condos *are* starter homes -- especially in places like san francisco where a 1200 square foot single family home will easily fetch 1.5 million. condos fit *so well* into their "just make it legal* ethos in every way except the vibes

what's the full policy slate on this? tax the phone calls, tax the texts, tax the job applications, tax the parking spots, tax the car size, tax the swimming pools in the summer, tax the roads, tax the swipes on dating apps. any i miss?

Cameron 🇺🇸🗽🦅@cameroncorduroy.bsky.social

the entry level job market could be dramatically improved by requiring a small deposit for job applications to deter AI slop but any company or government who implemented this would immediately be incinerated by the fury of a trillion suns

the whole NYC transplants discourse is so dumb. for one, new york city -- famously a city of transplants! for two, if you're asking "how many people who live in NYC were born in the US and not in New York State" it's like 14%.

if you look at US-born New Yorkers and ask where they're from, surprise, surprise the answer is: 1. New York State (77%) 2. Near New York City (8%) 3. Everywhere else (15%)

I think a fair critique of the CPI’s representativeness across households types is that there’s a lot of heterogeneity *within CPI sub component*. It’s pretty easy to make a low income basket with more weight on used cars and less on new. Harder to account for price of used Teslas vs carollas

Joe Fish@sadbusdriver.bsky.social

reviewing ALICE, one of the many, many "alternative cost of living indices". a few thoughts: 1. the index is a lil goofy. clothing is not considered an essential, for instance. 2. no quality adjustment anywhere. not necessarily wrong but does matter 3. CPI is way more transparent methodology wise

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my general takeaway with all these alternative cost of living indices is that the BLS should get a bigger budget and produce these internally. i think they have a much better institutional knowledge on how to do this sort of thing and dont have the incentive to produce "inflation is wrong" reports

ALICE is still a marked improvement on what the Ludwig Institute puts out, however. Ludwig finally "fixed" their misunderstanding of the housing component of CPI, but in the most misleading way possible However, Ludwig's kept the errors in their underlying rent inflation data and their website

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carrying on, some good things of the index (and of the MIT living wage calculator which is very similar and i think done a bit better). 1. it's very easy to look across space -- probably more so than the CPI 2. it's easier to look across household structure (provided you believe the reweights)

the flip side to this is that it's not gonna be great at tracking changes over time. the basket is price weighted and not expenditure weighted and the lack of quality adjustments makes comparisons over time tricky.

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clothing is an obvious omission in the index. it's an example of something whose price has been driven so far down that we dont even really conceive of it like an essential even though it is.

a technical aside: some people say that "computers more cheap" drives all the inflation adjusted wage gains. but, to the extent that people dont consume that many more computers as they get cheaper (demand is plausibly inelastic), over time the weight they get in the CPI goes down.

basically, what they do is define a set of categories that are essentials essentials are food, shelter, healthcare, transportation, technology, and child care (with adjustments for household structure). then assign each a price to make a budget. track this budget over time to make an index

“Expected deflation is super bad” is a bit not really true in most macro models right? Like it’s only really a zero lower bound issue? Unexpected deflation sure but if it’s expected most macro models should say it doesn’t matter — I don’t think any have a Keynesian deflationary spiral mechanism

The evidence is basically japans economy has been kind of sluggish (abstracting from weak demographics and other structural issues)? And even here I’m not sure which way the causality runs (weak demand -> low inflation vs low inflation-> weak demand)

Paper seems cool but those event studies look weird. Employment outcomes for the high exposure groups jump up right around 2021, so the effect seems very sensitive to the reference period. Eg, another interpretation is this is a plot of tech hiring in 2021 and slowdown post interest rate hikes

Dani Sandler@dismalscientist86.bsky.social

The most AI-exposed new college grads have initial employment declines of 5pp and earnings declines of 13%, partially driven by shifts to lower-paying sectors.

So then the issue is for the 7,8,9 deciles, you can kinda draw a straight line from 2019 to 2023. They might address this! I’ve barely skimmed the paper. But treatment onset is 2022. Alternatively:

not for nothing but i think people are dunking on this too hard. the underlying econ is all done by people who are considered very respected and some of the foremost experts on this kind of stuff. whether it ends up being correct, idk, but i can assure people they've thought about your objections

John Burn-Murdoch@jburnmurdoch.ft.com

New from us: Anthropic just published scenarios for AI’s possible economic impacts, which range from minimal, to explosive GDP growth of 15% by 2030 as knowledge-worker unemployment hits 18%. I sat down with their co-founder Jack Clark to pick his brains on how they’re thinking about all of this.

this is one of those where the fact that chatgpt release lines up so well with "information" payrolls should count as evidence *against* chatgpt being the cause of the decline. chatgpt sucked at release and even now AI usage is at like half of information firms. alternatively, interest rate hikes

Carl Quintanilla@carlquintanilla.bsky.social

Via @augurinfinity.bsky.social:

obviously income inequality has grown a lot and this is bad but it seems very weird that NBC is reporting a stock return number that is not adjusted for inflation and comparing it to a wages number that is.

Carl Quintanilla@carlquintanilla.bsky.social

(NBC News) — It is now the least rewarding time to be a worker in the U.S. economy since the government started keeping track. @nbcnews.com www.nbcnews.com/business/eco...

has anyone done a formal-ish decomposition of this? I could see / would be interested in checking a story where: 1. the first drop from q3 2021 -> q3 2023 is mostly income relabelling (look at the composition of the business boom and see if we see evidence of this?) 2. the q3 2024 -> now is AI

Mike Konczal@mtkonczal.bsky.social

BLS this morning, with revised 2Q data: "The labor share, which is the percentage of output that accrues to workers in the form of compensation, was 52.8 percent in the second quarter of 2026, the lowest level in the series, which begins in the first quarter of 1947."

well this aged poorly.

Joe Fish@sadbusdriver.bsky.social

1. lol 2. reading the article it kinda sounds like the "ballmer didnt do this" line the league is taking implies it's only bad to circumvent the cap if your owner hands the player a check with a memo that says "for cap circumvention" www.espn.com/nba/story/_/...

is this fake? 60 DB, which is what the guy says the meter reads at, is like the sound of an airconditioner

Abbey@abbeyarletto.bsky.social

This is what living next door to a 30 megawatt data center sounds like.