Joe Hall
@JP_Halll
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Boston ➡️ Stanford ➡️ Georgia Tech, Atlanta. I study financial technology for households and small businesses. YIMBY. My website is
Atlanta
Joined October 2011
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Last Seen Profiles
Pinned Tweet
🚨JMP THREAD ALERT🚨
I study the transformation of the U.S. Consumer Credit Industry from a retailer-funded model to a bank-funded model from 1950 to today. Why might we want to fund consumer credit with banks vs. stores? Well, in short, it helps small businesses!
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In stata, “X > Y” returns TRUE if X is missing, for any real Y
WHO DECIDED THIS?????
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@PhDemetri
Of all the things you could say about linear regression, "prone to overfitting"????????? It has two parameters!
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@PATreasurer
@icer_review
What did they spend on R&D, clinical trials, and capital expenditure to get to the point where they can produce it for $1 a pop?
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Born too early to explore space
Born too late to explore the earth
Born just in time to participate in the Difference-in-Difference Renaissance
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@mattyglesias
The thing that I just can’t understand about Latinx is that you can just say Latin
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@shiwhendi
@WendyRMonkey
@CapShower
Finding appropriate ways to mention you went to Harvard is how you collect points on www dot twitter dot com isn’t it?
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Nobel committee: these theoretical models of bank runs seem very important
People reading the models: wow, good thing we have deposit insurance!!
SVB looking at its 97% uninsured deposit base:
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@JosephPolitano
In this house we respect the HEROIC SHAREHOLDERS who generously SACRIFICED THEIR LIVES' savings to bring us the Sphere
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@WendyRMonkey
@CapShower
Two other dorms I could’ve been assigned to were Pennypacker and Hurlbut
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Pleased to announce that I will be continuing my academic journey in the beautiful city of Atlanta, Georgia at the Scheller College of Business at Georgia Tech! Many thanks to all the people without whom I wouldn't be where I am today, and excited for this next chapter!
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@AntiClimaco
The unreasonable effectiveness of submitting something with no obvious errors that fulfills the requirements of the assignment as written
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When your research advisor gives you a pep talk, pulling you from the pit of despair
@KhoaVuUmn
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As someone who was on the job market this year, did not receive any retweets by prominent economists, and did not get an assistant professor job offer, I can't fathom being mad about an obviously ethical RCT which produced useful information and updated my priors about the world
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@mattyglesias
@matt_levine
I’m genuinely curious — did you think the Fed has been raising interest rates by 25% every quarter?
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@StateStreetETFs
When the standard of likelihood is “potentially”, you can put literally anything in the place of “gold” and this will be correct.
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@TheEconomist
Hmmm I wonder why they have different credit scores…
This is like saying “controlling for food consumption we find no difference in malnutrition”
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@yearning_gaze
@GoodReddit
This is literally ever statue of a woman from every culture worldwide before like 1870
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@jeffphowe
not. a. competitor. I hate this.
First thing Tom ever told Bob was "I'm the best decision this franchise has ever made".
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This has big "my son who took two AP classes and scored 1450 on the SAT was rejected from Harvard" energy
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@creation247
You can go to a store today and buy any of those outfits on the top row and wear them anywhere you want! Go live your dreams!!!
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@arthur_spirling
He's kinda cooking though... Given any data, can't any posterior (that assigns some positive probability to any data) be reverse-engineering by choosing a certain prior?
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The CDC has announced that fully vaccinated individuals can now do m:m merges in stata
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@priyavshan
R is just a phone book full of nice grandmothers who will sew masks for you for free
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@JosephPolitano
Actually, making Erdogan officially ban Twitter would be obviously better than letting him quietly censor the platform
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My brother in Christ what exactly do you think determines market valuations?
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@EconChrisClarke
But did you control for households' higher demands for what bundles of goods and services are considered adequate for a reasonable and comfortable life?
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My substack on Cengiz,
@arindube
and
@benzipperer
(2019),
@jeffreypclemens
and Strain (2021) and Callaway and
@pedrohcgs
(2020) regarding the minimum wage is up. Apologies it's so long. I bit off a lot to chew.
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ChatGPT mimics human biases: I asked it to flip 100 coins for me. The result? Zero sequences of 3-in-a-row (24 such sequences would be expected).
This pattern is observed in human-generated "random" sequences as well.
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@the_transit_guy
No, don't you understand, all these expensive egg producers just decided to start selling really expensive eggs because of speculation in the egg financial markets
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@ArmandDoma
Any time your punchline is reminding someone else what race they are, something went wrong with your logic
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If you learn anything about finance in your life, make it this:
There’s no such thing as a risk-free 20% annual return
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Delighted to be recognized and awarded as a Rising Financial Literacy Scholar by the Cherry Blossom Financial Education Institute! Many thanks to the organizers of this conference, especially our fabulous and charismatic hostess
@Dr_AnnaLusardi
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@DeclanDuggan12
@PATreasurer
@icer_review
Well, for every drug they develop that pays off, they develop 9 others that don’t.
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“But advisor”, the phd student asked, “what about where there are only one set of footsteps?”
“That”, the advisor replied, “was the semester when I was teaching”
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@invariance
You'd need firm-by-year FE's to absorb firm age entirely, but what you're describing seems more like the "Cohort-Period-Age" under-identification problem:
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@KhoaVuUmn
The best dissertation defense is a good offense. This is why you should show up with copies of your committees' dissertations marked up with corrections
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@jt_kerwin
That’s only if you assume IIA. Ohio State may well be preferred to MIT if Sciences Po is added to the consideration set.
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@KhoaVuUmn
Daron Acemoglu is allowed to select on the dependent variable AND condition on colliders
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@matthews_p
@JosephPolitano
"Cash" for a big bank isn't physical dollar bills, it's an entry on the Fed's ledger (reserves). Seems these can be temporarily overdrawn (apparently)
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@web3den_
@venturetwins
This then leaves open the question of why division by fractions does exist
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@RanadebBhattac2
@SaraWahedi
The last time the Catholic Church tried to forcefully intervene in the region they were widely criticized for it
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@chrissyteigen
Actually, if you take 50% off and then 4% off from the new number, you’d end up at 52% off overall. 54% off is really 50% and then 8% off — an even better deal!
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@theprovenwinner
YIMBY checking in to say yes, I support this project, no shade study needed.
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@MarcRobbins15
@AlecStapp
This is a classic NIMBY tactic. Keep asking for small tweaks and insist you’re not against development in general, just the details. Repeat until nothings gets built.
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@ShengwuLi
You may be joking, but this is a real functional form restriction applied to non-parametric Expected Points models.
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@Susan_Athey
@KhoaVuUmn
When a professor in the audience asks how you calculated standard errors and you tell them "I clustered at the level of treatment assignment"
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@ben_golub
@NoahHaber
-use a spring. F=kx will mimic regression weights
-have the points on a vertical slider so they can only pull up and down
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@KhoaVuUmn
“We burned the GPUs for days cracking hashes to confirm your priors with the utmost precision!”
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@maxdubler
If you want to feed your family at Mollie Stone's you better make 6 figures and that family better be you and a pet mouse
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@jdmaccoby
“Jesus turned over the tables of the money changers and drove them from the temple, so that he could claim a sole monopoly on the arms trade and earn billions of shekels” -Republicans 20:18
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