Jamie Thomson

Dad, atheist, data wrangler, pedant. @louisaburlumi’s husband. @dannytleeds’s brother. Its 100% off if you don't buy it. Mastodon:

[Jamie Thomson @jamiet]

@LUFC

[Jamie Thomson @jamiet]

@julianhyde Yes, I think of git, brew & docker as CLIs

[Jamie Thomson @jamiet]

@1968Tv @tonydorigo @tonydorigo looking smooth Tony https://t.co/qdpE90cFKw

[Jamie Thomson @jamiet]

@LBofHounslow Can you share a link to that map?

[Jamie Thomson @jamiet]

I just published jstark demo notebook https://t.co/UbZDM5PIaL

[Nav Toor @heynavtoor]

Researchers sent the same resume to an AI hiring tool twice. Same qualifications. Same experience. Same skills. One version was written by a real human. The other was rewritten by ChatGPT.

The AI picked the ChatGPT version 97.6% of the time.

A team from the University of Maryland, the National University of Singapore, and Ohio State just published the receipt. They took 2,245 real human-written resumes pulled from a professional resume site from before ChatGPT existed, so the human writing was actually human. Then they had seven of the most-used AI models in the world rewrite each one. GPT-4o. GPT-4o-mini. GPT-4-turbo. LLaMA 3.3-70B. Qwen 2.5-72B. DeepSeek-V3. Mistral-7B.

Then they asked each AI to pick the better resume. Every model picked itself.

GPT-4o hit 97.6%. LLaMA-3.3-70B hit 96.3%. Qwen-2.5-72B hit 95.9%. DeepSeek-V3 hit 95.5%. The real human almost never won.

Then the researchers tried the obvious objection. Maybe the AI is just better at writing. So they had real humans grade the resumes for actual quality and ran the experiment again, controlling for it. The result was worse. Each AI kept picking itself even when human judges rated the human-written version as clearer, more coherent, and more effective.

It gets worse. The AIs do not just prefer AI over humans. They prefer themselves over other AIs. DeepSeek-V3 picked its own resumes 69% more often than LLaMA's. GPT-4o picked its own 45% more often than LLaMA's. Each model can recognize and reward its own dialect.

Then the researchers ran the simulation that ends careers. Same job. 24 occupations. Same qualifications. The only variable was whether the candidate used the same AI as the screening tool. Candidates using that AI were 23% to 60% more likely to be shortlisted. Worst gap was in sales, accounting, and finance.

99% of large companies now run AI on incoming resumes. Most of them use GPT-4o. The paper just proved GPT-4o picks GPT-4o 97.6% of the time.

If you wrote your own cover letter this week, you did not lose to a better candidate. You lost to a worse candidate who paid OpenAI 20 dollars.

Your qualifications do not matter if the AI prefers its own handwriting over yours.

[Jamie Thomson @jamiet]

@willmcgugan I built a thing using #textual https://t.co/8xn54WddJT

[Jamie Thomson @jamiet]

I built a thing https://t.co/Uf9aGty8Bh

Run it by issuing:

uvx awstui

[Jamie Thomson @jamiet]

I built a thing https://t.co/Uf9aGty8Bh

Run it by issuing:

uvx awstui

[Jay in Kyiv @JayinKyiv]

Long unofficially banned from appearing on state TV, incoming Hungarian Prime Minister Peter Magyar appears on a channel to which he was previously not allowed only to announce an end of "North Korean" style Orban media monopoly.

[Jamie Thomson @jamiet]

@electricbrixton @PaulDraper Got my tickets. What time is Paul on stage?

[Jamie Thomson @jamiet]

I just published jstark — 20th March 2026 update https://t.co/BZJJB1aIg9

[Jamie Thomson @jamiet]

@OneMorePoint1 @HaskinsIvor @retrofootballnw enjoy https://t.co/eLWvwKfEfD

[Jamie Thomson @jamiet]

@OneMorePoint1 @HaskinsIvor @retrofootballnw In another he single-handedly ousted a south american dictator by playing against, and beating, his favourite footy team. Legend.

[Jamie Thomson @jamiet]

@OneMorePoint1 @HaskinsIvor @retrofootballnw Loved the taunting of Jose Killer in the World Cup final to earn a pen.
"How'd you like that Jon Stark?"
"(I like it just fine you idiot)"

Priceless!

[Jamie Thomson @jamiet]

jstark 0.1.6 released. Polished a few rough edges https://t.co/z6V9dCPElj
#pyspark

[Jamie Thomson @jamiet]

I just published Announcing jstark — a python library for pyspark feature generation https://t.co/9oLL85LFK1

[Jamie Thomson @jamiet]

@OctopusEnergy export of electricity usage from your website no longer includes estimated cost, it’s been removed at some point since 2nd December. Please can it be reinstated?

[Jamie Thomson @jamiet]

@LUFC Enjoying DCLs celebratory lifting of Brendy like he’s lifting the Zenith Data Systems Cup

[Jamie Thomson @jamiet]

@TRO1972 @OctopusEnergy I DM’d @OctopusEnergy and someone replied a few minutes later saying “try it now”. I did, and it worked