iiinova — where your digital self keeps evolving

Reposted by Jeff Eldridge

Jake Grumbach @jakemgrumbach.bsky.social · 17h

New working paper: the Norwegian wealth tax was a huge success. The "exodus" of wealthy people never happened (less than 100 individuals left). Tax revenue increased by 71.5%. No changes in business activity or investment. www.nber.org/papers/w35854

Taxing Entrepreneurial Wealth: Evidence from
Norway, 2021-2025
Marius A. K. Ring
WORKING PAPER 35854|
DOl 10.3386/w35854
ISSUE DATE October 2026
Whether imposing higher taxes on business owners adversely affects business activity by constraining investment and inducing capitalist flight is a central question in the ongoing debate on how to tax the ultra wealthy. To shed new light, I exploit a series of related Norwegian reforms during 2021-2024 that increased dividend tax rates, removed migration-related capital gains tax loopholes, and nearly doubled the effective marginal tax rate on business wealth. These reforms spurred international debate and, allegedly, an "exodus" of Norwegian billionaires (Financial Times,
2023). While I document clear effects on migration, these responses are concentrated among the top 0.1% of the wealth distribution and mostly confined to 2022 and 2023. My results indicate that at most 100 individuals left due to the reforms. I find no evidence of significant outmigration or reduced inflows of startup founders or inventors. I estimate that absent any outmigration, wealth tax revenues would have increased by 75% from 2021 to 2024. Reform-driven outmigration lowers the revenue gain to 71.5%. My findings further show that outmigrating owners' firms remain economically active and do not reduce investment. In a broader set of analyses, I examine whether business outcomes are affected, regardless of whether owners outmigrate, since firms may reduce investment both due to liquidity constraints or distortions to owners' savings decisions. I compare firms owned by Norwegian individuals subject to the wealth tax with firms owned by foreigners and other tax-exempt entities. By merging historical ownership data from Orbis with the Norwegian shareholder register, I perform these analyses on both Norwegian and foreign-domiciled firms.
Across settings, I find no evidence that Norwegian-owned firms pay out more dividends or invest less after the reforms,…

8984723649

Jeff Eldridge @jeffeldridge.bsky.social · 09/10/2026

One Two Three Four Weddings and a Funeral

110

Jeff Eldridge @jeffeldridge.bsky.social · 08/10/2026

When do they announce the FIFA Prize for Superintelligence™?

000

Jeff Eldridge @jeffeldridge.bsky.social · 05/10/2026

Sounds like something out of Star Trek.

000

Jeff Eldridge @jeffeldridge.bsky.social · 03/10/2026

I saw a "war.gov" recruiting ad earlier that looked like it was straight out of STARSHIP TROOPERS.

011

Jeff Eldridge @jeffeldridge.bsky.social · 19/09/2026

They seem to be playing the University of Kentucky, which historically has a very good basketball team but is not as well known for football.

012

Jeff Eldridge @jeffeldridge.bsky.social · 19/09/2026

human history"). And Jason Coxon, who recently resigned his job as a lead researcher at Anthropic, warned: "The people building AI earnestly believe that it could kill us all by the end of the decade." tl;dr: Don't use AI in this class.

000

Jeff Eldridge @jeffeldridge.bsky.social · 19/09/2026

The slop produced by AI often contains downright incorrect information. The LLMs behind AI have been trained via massive intellectual-property theft (which in court filings a Microsoft executive admitted were "an astonishing theft of unprecedented proportions" and "the largest theft of labor in…

110

Jeff Eldridge @jeffeldridge.bsky.social · 19/09/2026

amounts of water and electricity, which have already resulted in significant increases in water and power bills for ordinary citizens (and more recently have resulted in the EPA rolling back clean-air protections to allow fossil-fuel plants to pollute the air while producing this extra electricity).

100

Jeff Eldridge @jeffeldridge.bsky.social · 19/09/2026

of 0. These class policies are not designed to punish students, but rather to reward those who are attempting to actually learn calculus. Furthermore, using AI causes actual environmental harm. The giant data centers being built to create the slop served up by Large Language Models require huge…

100

Jeff Eldridge @jeffeldridge.bsky.social · 19/09/2026

technology, but your screen(s) must be visible at all times and any AI use will result in a score of 0. Online quizzes (which are not timed and allow up to 10 attempts on each problem) constitute 12.5% of your grade, but be aware that any indication of AI use on these will also result in a score…

100

Jeff Eldridge @jeffeldridge.bsky.social · 19/09/2026

that 50% of your grade will be the result of in-class assessments, where any AI use will result in an academic integrity violation (and two of those will result in a grade of 0.0 for the course). Roughly a third of your grade will come from in-class activities during which you are welcome to use…

100

Jeff Eldridge @jeffeldridge.bsky.social · 19/09/2026

Google has made this impossible on phones.) A better solution might be to use a different search engine, such as DuckDuckGo (which does serve up AI slop, but at least provides a simple way to turn that off). In case you need additional motivation to eliminate the use of AI in this class, be aware…

100

Jeff Eldridge @jeffeldridge.bsky.social · 19/09/2026

AI slop as the top result, whether you want it or not. On a desktop or laptop, you can avoid this by clicking "More" and then "Web" at the top of the search results. (You can also adjust the search settings in your browser so that this is the default, but there is no simple way to turn off AI, and…

100

Jeff Eldridge @jeffeldridge.bsky.social · 19/09/2026

to solve problems on your own. Isolating yourself from AI is becoming increasingly difficult because the giant corporations that have invested billions of dollars in these new technologies have every motivation to shove it in your face whenever they can. Google searches now by default return…

100

Jeff Eldridge @jeffeldridge.bsky.social · 19/09/2026

The process of "productive struggle" when working on calculus problems is the key to a deeper understanding of course concepts and improving your ability to think and solve problems in general. Short-circuiting this process with AI or other tools leads to a lack of understanding and an inability…

100

Jeff Eldridge @jeffeldridge.bsky.social · 19/09/2026

Make use of the resources on [LMS] (including videos). Ask a question in the appropriate [LMS] forum (sharing as much as you can about which approaches you have already tried). Ask for assistance during office hours. Visit the STEM Study Room for free tutoring and to work alongside other students.

100

Jeff Eldridge @jeffeldridge.bsky.social · 19/09/2026

When starting to work on a problem, the best first step is: Just try something! Your initial attempt may be unsuccessful in finding an answer, but it can rule out one approach and direct you toward trying others. If you are working on a problem, ask your classmates or the instructor for guidance.

100

Jeff Eldridge @jeffeldridge.bsky.social · 19/09/2026

participate during class by focusing on the problems being solved and asking questions if you don't follow a particular step. (If you don't understand something, it's highly likely that many others in the class are in the same situation but are afraid to speak up—never be afraid to ask a question!)

100

Jeff Eldridge @jeffeldridge.bsky.social · 19/09/2026

is reduced because AI conditions people to expect immediate answers, thereby denying them the experience of working through challenges on their own.") What should you do instead? Start by reading the textbook, rather than just skimming through it looking for a similar example problem. Actively…

100

Jeff Eldridge @jeffeldridge.bsky.social · 19/09/2026

shown that while AI "tutoring" or other assistance might improve "performance in the short-term, people perform significantly worse without AI and are more likely to give up. Notably, these effects emerge after only brief interactions with AI [≈10 minutes]." The researchers "posit that persistence…

100

Jeff Eldridge @jeffeldridge.bsky.social · 19/09/2026

benefit if you found yourself in France with no cellphone signal. Likewise, copying answers and steps that you don't understand from AI tools (or other apps and sites that solve math problems on your behalf) will not help you learn calculus. (A recent study [arxiv.org/html/2604.04721v2] has…

100

Jeff Eldridge @jeffeldridge.bsky.social · 19/09/2026

calculus, you will achieve neither. Taking a P.E. course that involved weightlifting and using a forklift to raise the weights would move the weights up and down, but wouldn't strengthen your muscles. Enrolling in French 101 and using Google Translate for all of your coursework would yield no…

100

Jeff Eldridge @jeffeldridge.bsky.social · 19/09/2026

Artificial Intelligence vs. Actual Intelligence: Your goal in this course should be to learn calculus, rather than to simply get a good grade or check off a requirement. If you succeed in learning calculus, the grade and the check-off will follow; if you try to achieve those things without learning…

100

Jeff Eldridge @jeffeldridge.bsky.social · 19/09/2026

For years, I have prided myself on handing students a one-page syllabus (that includes a link to all of the generic college-mandated information not specific to the course) but AI has finally made me break down and add a second page (inspired in part by some #MathSky posts over the past few months).

anti-AI diatribe (due to length, full text is available in the remaining entries in this thread)

120

Reposted by Jeff Eldridge

Patrick Andelic @pkandelic.bsky.social · 18/09/2026

The Muppets have to put on a show to save the Kennedy Center. There you go, Disney, that's your premise.

263125691

Reposted by Jeff Eldridge

Bill Kristol @billkristolbulwark.bsky.social · 17/09/2026

Defund ICE. Take its entire budget and devote it to a Manhattan Project that can devise and implement sound guardrails for AI, and figure out how to stop what can and should be stopped in the way of superintelligence and recursive self-improvement. AI is far, far more dangerous than immigrants.

431188273

Jeff Eldridge @jeffeldridge.bsky.social · 18/09/2026

Do NOT check what happened to The Learning Channel.

010

Reposted by Jeff Eldridge

Robert "The Bobby Yaga" McNees @mcnees.bsky.social · 17/09/2026

Mathematician Bernhard Riemann was born #OTD in 1826. He made deep contributions to complex analysis and number theory, but is best remembered by physicists for his work on the foundations of geometry that would one day provide the mathematical framework for general relativity. 🧪 ⚛️ 🧮

A black and white photo of mathematician Bernard Riemann. He is sitting next to a table, legs crossed and looking just to the side of the camera. Riemann is wearing a dark suit. He has a pair of small eyeglasses on, and a full beard.

26312

Reposted by Jeff Eldridge

Mario Livio @mariolivio.bsky.social · 17/09/2026

Today Sep 17. On this date in 1826 mathematician Bernhard Riemann was born. His profound,novel approaches to the study of geometry laid the mathematical foundation for the theory of relativity. Also made important contributions to theory of functions, complex analysis, and number theory.

032

Reposted by Jeff Eldridge

Ken Tremendous @kentremendous.bsky.social · 17/09/2026

It's difficult to overstate how quickly and thoroughly the U.S. economy would tank if he were to do this, and it's terrifying to imagine that no one in his circle has the guts to explain that to him.

57908168

Reposted by Jeff Eldridge

Ian Linkletter @linkletter.org · 16/09/2026

A lawsuit has been filed against Padlet, alleging they share student data in real time to 160+ third parties (including data brokers, Meta, and Google). Padlet is heavily used in K-12 as well as higher education with students who have no choice. Read the complaint: drive.google.com/file/d/1OGPe...

drive.google.com

Padlet Lawsuit.pdf

03224

Jeff Eldridge @jeffeldridge.bsky.social · 17/09/2026

Wait, does this mean the Mariners are out of contention?

020

Reposted by Jeff Eldridge

Ken Jennings @kenjennings.bsky.social · 17/09/2026

I’m on a quiz show that only tapes 46 days a year and even I think this schedule is a little light.

412168294

Reposted by Jeff Eldridge

Ian Linkletter @linkletter.org · 16/09/2026

It's unethical to pay for Canvas Lite with student personal information, especially considering the April 2026 security breach affecting 275 million people. Marketing Canvas Lite as a way to skip procurement, district approval, and privacy assessments should be disqualifying for them as a company.

044

Reposted by Jeff Eldridge

Sean Laverty @seanteachesmath.bsky.social · 15/09/2026

“I’ve forgotten how to write.” Or is it, “the words you’ll read aren’t worth my time to write?”

Al Disclosure: I used OpenAl's Codex to help organize this piece and edit it for clarity. The ideas and experiences are entirely my own.

A horizontal line.

A picture of a man

121

Reposted by Jeff Eldridge

Bill Kristol @billkristolbulwark.bsky.social · 14/09/2026

“I don’t think Americans should be scared of anything,” says Vance, who’s part of an administration that shamelessly works to terrify Americans about law-abiding immigrants and transgender military officers.

3250680

Reposted by Jeff Eldridge

Puff the Magic Hater @mskellymhayes.bsky.social · 14/09/2026

"An AI agent went rogue" also feels like a test drive for an era when no one is responsible for the worst things these products do. Seems like a standard that could be really convenient for certain governments.

151049281

Jeff Eldridge @jeffeldridge.bsky.social · 13/09/2026

Ah, the result of the Mariners trading Harrison Ford for José Ferrer.

010

Reposted by Jeff Eldridge

Bill Amend @billamend.bsky.social · 13/09/2026

Why can’t there be a tv show like Dancing with the Stars but instead of teaching dancing, experts teach contestants math/science/history/literature/art etc and then they get quizzed and someone goes home each week (not a knock on dwts, I just wish we elevated other things as well)

6994091

Jeff Eldridge @jeffeldridge.bsky.social · 11/09/2026

It was a convocation, not a commencement. Someone interviewed for the story likely misspoke or was misquoted.

001

Reposted by Jeff Eldridge

Andrew Weinstein @andrewjweinstein.com · 09/09/2026

You know who actually did show up at Ground Zero? Canadian emergency rescue crews.

391309767718

Jeff Eldridge @jeffeldridge.bsky.social · 28/08/2026

But is it one of the greatest short poems?

000

Reposted by Jeff Eldridge

Robert Komaniecki @komaniecki.bsky.social · 19/08/2026

How do I explain to small business owners that the menu on the left is one billion times more appealing than the one on the right

1101285996341

Reposted by Jeff Eldridge

Just my thoughts 🇨🇦 @bc60.bsky.social · 18/08/2026

US spends unlimited money on wars; next-generation blackboards in China🇨🇳. Different choices define different futures USA: no $ for that; we spent $ on shock gloves to torture children in concentration camps..China’s doing this for their kids, and we’re putting the Ten Commandments in public schools

37157152070