John Roman
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johnkroman.bsky.social
John Roman
@johnkroman.bsky.social

Director, Center on Public Safety and Justice, NORC at the University of Chicago. Essays: https://johnkroman.substack.com/.

John Romano was an American physician, psychiatrist, and educator whose major interest was in medical education and the important relationship between psychiatry and medicine. He founded the Department of Psychiatry at the University of Rochester and served as chairman from 1946 to 1971. He published over 200 scientific papers and served on several editorial boards including the Journal of Psychiatric Research. .. more

Public Health 19%
Economics 16%
Pinned
Greeting new Bluesky people! And welcome. Here are 100 ideas for reducing crime and improving safety without more police and prisons. johnkroman.substack.com/p/100-ideas-... And a summary version at Vital City: www.vitalcitynyc.org/articles/twe...

Stay in school kids. When your connecting flight is delayed, and you’re gaming out alternate routes, all that algebra is going to be really helpful.

Every day, school is a surprise.

Me: "Hey! Let's go! The bus will be here any minute"

Child: "What are you talking about??!?"

The Prosecutors and Politics Project at UNC School of Law has released a study analyzing over 11,000 bills changing criminal law in all 50 states between 2015 and 2018. Please join me and a very distinguished panel today, October 1, at Noon EST to discuss the implications. lnkd.in/etzAqi3M

It’s true though!!

<kicks can>
<sulks>
<jumps on tiny dirt bike>
>rides off into the dirty sunset>

Once again, Gen X is forgotten.

I would be happy to accept that title!

Without looking closely, I have twelve papers in there. Since authors are not paid for academic articles, the irony would be that this would be my first check.
Just a reminder to check for your name in this list of books that OpenAI trained from. If your name is there, they probably owe you several thousand dollars.

OpenAI cried that if everyone eligible author files, the company will go bankrupt, so I'm alerting every author I have ever spoken to.
Search LibGen, the Pirated-Books Database That Meta Used to Train AI
Millions of books and scientific papers are captured in the collection’s current iteration.
www.theatlantic.com

I think 83% of my emails are this exchange.

Them: What time can you meet on Wednesday?
Me: Anytime but 10 to 11
Them: Great, I'll send an invite for 10.
Just a reminder to check for your name in this list of books that OpenAI trained from. If your name is there, they probably owe you several thousand dollars.

OpenAI cried that if everyone eligible author files, the company will go bankrupt, so I'm alerting every author I have ever spoken to.
Search LibGen, the Pirated-Books Database That Meta Used to Train AI
Millions of books and scientific papers are captured in the collection’s current iteration.
www.theatlantic.com

In the opening sequence of Numbers, he writes X=yb on the glass. That was the beginning of the end...

Crime control is undergoing a massive shift in the US and around the world, with surveillance tech advancing much faster than privacy protections. Bottom-line: the tech does reduce crime, and, it will likely infringe on civil liberties without careful regulation. www.forbes.com/sites/thomas...
AI Startup Flock Thinks It Can Eliminate All Crime In America
With more than 80,000 AI-powered cameras across the U.S., Flock Safety has become one of cops’ go-to surveillance tools. Now CEO Garrett Langley has both police tech giant Axon and Chinese drone maker...
www.forbes.com

Reposted by Jeffrey A. Butts

Polls show most Americans think crime is rising because 'crime' is a catch-all term. But, there are dozens of evidence-based ways to reduce disorder and fight crime, and many of the most effective approaches do not involve the police. open.substack.com/pub/johnkrom...
When people say crime is a big problem, are they really talking about crime?
Sometimes, but not always
open.substack.com

This post was your magnum opus. Bravo.

The Abundance agenda has real promise, but it does require a much more serious approach to crime. open.substack.com/pub/johnkrom...
On the YIMBY-Abundance Crime Blind Spot
Nudging the pro-city crowd toward more effective crime policy
open.substack.com

Bravo!

Spot on. I would note that there are 43 law enforcement agencies operating in Washington, the majority of which are federal. The Capitol Hill police alone have a force about the size of Cleveland's municipal police.
The president wants to “take back” DC, but the federal government never really let it go.

It touches nearly every aspect of life in the city, making it harder for local officials to manage even the things Trump cares most about.
www.nytimes.com/2025/08/14/u...
Trump Wants to ‘Take Back’ D.C., but the Federal Government Already Controls Much of It
www.nytimes.com

There are several evidence-based explanations for the crime spike and decline. I summarize them here, and explain why some fit the data better than others: johnkroman.substack.com/p/explaining...
Explaining the COVID Violence Spike and the Roaring Crime Decline
Four Reasons for the Historic Beginning to the 2020s
johnkroman.substack.com

Such a bad take from the @nytimes.com. It ignores decades of evidence from police research, criminology, economics, etc. It's a barstool conversation based on a hazy recollection of college sociology. www.nytimes.com/2025/08/14/o...
Opinion | Crime Keeps Falling. Here’s Why.
www.nytimes.com

Reposted by John Roman

The president wants to “take back” DC, but the federal government never really let it go.

It touches nearly every aspect of life in the city, making it harder for local officials to manage even the things Trump cares most about.
www.nytimes.com/2025/08/14/u...
Trump Wants to ‘Take Back’ D.C., but the Federal Government Already Controls Much of It
www.nytimes.com

It is hard to think of an idea with more staying power, and one with less empirical support, than the idea that the way to be tough on crime is to lock lots of people up. What I want to propose here is a much more effective way to be tough on crime. open.substack.com/pub/johnkrom...
Let’s get tough on crime by solving more crimes
Choosing between certainty and punishment
open.substack.com

It’s interesting that there seems to have been some inflation in the estimates too: it was 18,000, then 18,500, now I see 19,000. It’s totally plausible there is an increase, but, you’d think we’d *know* this!

I have say, I never thought about this. That’s a helluva good insight!