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Andrew Perfors

@perfors.net

Prof at UniMelb. I'm a computational cognitive scientist studying human inference, learning, information systems, culture, and (mis/dis)info. Nerd & opinionated loudmouth in Oz, originally from America, citizen of both. Parent of two. πŸ³οΈβ€βš§οΈ perfors.net

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Latest posts by Andrew Perfors @perfors.net

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Okay this made me cry

06.03.2026 02:39 πŸ‘ 201 πŸ” 51 πŸ’¬ 4 πŸ“Œ 3
A brown penguin chick of some kind. It looks very much like a man in a suit. It is bedraggled and miserable

A brown penguin chick of some kind. It looks very much like a man in a suit. It is bedraggled and miserable

Made it to Friday but at what cost

06.03.2026 03:24 πŸ‘ 5444 πŸ” 1051 πŸ’¬ 47 πŸ“Œ 67
a map of openai's influence on other media companies

a map of openai's influence on other media companies

Amazing site here via @timnitgebru.bsky.social - a map of big tech influence on media and media companies.

imo this goes a decent way to explaining why coverage of AI specifically has been so shockingly bad recently. Very useful resource!!

nananwachukwu.github.io/media-captur...

05.03.2026 12:02 πŸ‘ 193 πŸ” 99 πŸ’¬ 4 πŸ“Œ 2

The entire anti-trans care grift is built in treating the usual way medicine works as if it's a scandal.

Therapists figure out if a kid is trans the same way they figure out if they're depressed. They ask questions, maybe using a formal scale to quantify how kids compare to similar kids.

04.03.2026 19:55 πŸ‘ 1629 πŸ” 322 πŸ’¬ 31 πŸ“Œ 9
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Thoughts & prayers to the EPA :(

04.03.2026 20:02 πŸ‘ 1966 πŸ” 668 πŸ’¬ 42 πŸ“Œ 39

Jesse Singal: β€œI don’t understand why all these experts with degrees keep disagreeing with me. So demoralizing. What could the explanation be??”

04.03.2026 17:14 πŸ‘ 8352 πŸ” 1490 πŸ’¬ 147 πŸ“Œ 52

i think enthusiastic LLM use is mostly a stack of cognitive biases, unacknowledged plagiarism, and unmet needs in a trenchcoat

but also my main objections aren't about them being bad at tasks so i don't care if you think they've gotten better at it

04.03.2026 16:53 πŸ‘ 454 πŸ” 134 πŸ’¬ 8 πŸ“Œ 3
Data centre power emissions double over five years
Ryan Cropp
Ryan CroppEnergy and climate reporter
Mar 3, 2026 – 7.32pm

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Some of Australia’s biggest data centre operators have more than doubled their reported carbon emissions over the past five years, as the exponential growth of the sector leads to a major rise in demand on the power grid and puts pressure on the government’s climate agenda.
Top data centre operators Amazon, AirTrunk and CDC all declared annual scope two emissions increases of more than 20 per cent in 2024-25 and more than 100 per cent since 2020-21, according to new figures published by the Clean Energy Regulator.

Data centre power emissions double over five years Ryan Cropp Ryan CroppEnergy and climate reporter Mar 3, 2026 – 7.32pm Save Share Gift this article Some of Australia’s biggest data centre operators have more than doubled their reported carbon emissions over the past five years, as the exponential growth of the sector leads to a major rise in demand on the power grid and puts pressure on the government’s climate agenda. Top data centre operators Amazon, AirTrunk and CDC all declared annual scope two emissions increases of more than 20 per cent in 2024-25 and more than 100 per cent since 2020-21, according to new figures published by the Clean Energy Regulator.

AirTrunk founder Robin Khuda told The Australian Financial Review Business Summit on Tuesday that the government’s AI plan was β€œpretty good”, but it needed to think more holistically about how the nation would build the infrastructure required to power it.
Reported electricity emissions by data centre operator (tonnes CO2e)
AmazonNextDCAirTrunkEquinixCDC
FY21
FY22
FY23
FY24
FY25
200K
250K
300K
350K
400K
450K
500K
550K
Source: Clean Energy Regulator
The technology industry has argued that the energy demands of data centres will support the rollout of renewable power because they will sign the long-term power purchase agreements needed to make projects financially viable.

AirTrunk founder Robin Khuda told The Australian Financial Review Business Summit on Tuesday that the government’s AI plan was β€œpretty good”, but it needed to think more holistically about how the nation would build the infrastructure required to power it. Reported electricity emissions by data centre operator (tonnes CO2e) AmazonNextDCAirTrunkEquinixCDC FY21 FY22 FY23 FY24 FY25 200K 250K 300K 350K 400K 450K 500K 550K Source: Clean Energy Regulator The technology industry has argued that the energy demands of data centres will support the rollout of renewable power because they will sign the long-term power purchase agreements needed to make projects financially viable.

The emissions of Australia's top data centre operators have doubled over the past few years. You can see why Amazon Australia fought so hard to try and keep these numbers hidden.......

www.afr.com/policy/energ...

04.03.2026 10:43 πŸ‘ 97 πŸ” 56 πŸ’¬ 3 πŸ“Œ 0

this is not an amount of money any individual or household should be able to have and we have to abolish both billionaires as a group and the economic system that makes them possible

04.03.2026 03:29 πŸ‘ 4598 πŸ” 926 πŸ’¬ 28 πŸ“Œ 11

Every trans person is like "I knew something was up before I had the words to describe it and had to fight for this for years" and every transphobe is like "one conversation with a doctor could have convinced me to get the walrus surgery from the movie 'The Walrus'"

03.03.2026 23:26 πŸ‘ 1815 πŸ” 403 πŸ’¬ 8 πŸ“Œ 3

Yes! We literally cannot shut up about our work.

03.03.2026 23:38 πŸ‘ 56 πŸ” 16 πŸ’¬ 3 πŸ“Œ 0

people have been lied to about this. the GOP, the NYT, and sundry centrists have spread this bullshit story where kids are being bum rushed into surgery by a shadowy conspiracy of endocrinologists and gender ideologues

03.03.2026 15:06 πŸ‘ 1022 πŸ” 262 πŸ’¬ 16 πŸ“Œ 2

This is called doing double work. The complaints I'm hearing from veteran coders is they're losing their minds that bosses are recruiting cheap vibe coders to fill out teams and real coders spend half their time fixing the dogshit code.

03.03.2026 18:13 πŸ‘ 280 πŸ” 76 πŸ’¬ 4 πŸ“Œ 6

In the last decade, the Atlantic has not platformed a single trans person to speak about issues affecting them or the broader trans community. Not a single one. Yet, they have monthly screeds by Helen Lewis and endless money to pay random transphobic grifters to pump stuff like this out.

03.03.2026 18:12 πŸ‘ 2149 πŸ” 484 πŸ’¬ 20 πŸ“Œ 14

yeah honestly if this is the price i pay for the good bits, so be it! :)

03.03.2026 12:00 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Just saw you saw! I'm glad for you at least :)

03.03.2026 11:59 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

No πŸ˜₯

Might have been better closer to Melbourne, but up in the Dandenongs where I live it's solid cloud. (To be fair I gave up about 20 minutes ago)

You?

03.03.2026 11:58 πŸ‘ 1 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0
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good morning everyone project your personal imposter syndrome onto this gif ur welcome

03.03.2026 08:08 πŸ‘ 134 πŸ” 35 πŸ’¬ 5 πŸ“Œ 3

Yeah the cloud cover here is so complete I can't detect even a trace of the awesome thing happening at this very moment πŸ˜₯

feels like a metaphor

03.03.2026 11:03 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

😩😭 oh dear!

02.03.2026 22:28 πŸ‘ 3 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Simpson's meme. Top panel: Is this homework too hard? Bottom panel: No it's easier than real research.

Simpson's meme. Top panel: Is this homework too hard? Bottom panel: No it's easier than real research.

Sometimes I assign applied statistics homework problems that are pretty difficult. Students spend hours over days on them. But you know what is much much harder? Research

02.03.2026 15:04 πŸ‘ 52 πŸ” 3 πŸ’¬ 1 πŸ“Œ 0

I've repeatedly said this in the past: the end goal of all AI is surveillance, specifically to influence and control

02.03.2026 19:33 πŸ‘ 193 πŸ” 78 πŸ’¬ 3 πŸ“Œ 6

A big part of the authoritarian playbook is war. War takes over the news. War blots out criticism. War divides a nation’s people, subjecting those against it to being called unpatriotic. War grants leaders all sorts of emergency powers. War consumes everything else.

We mustn’t let this war do so.

01.03.2026 23:01 πŸ‘ 23197 πŸ” 7872 πŸ’¬ 697 πŸ“Œ 320

I get why/that people say this, but dont' underestimate this:

all other social networks are invested in making sure that posts that link to journalism remain buried, or at least never go viral.

BlueSky doesn't do that. That makes it very valuable to a ton of newsrooms righ tnow.

01.03.2026 23:52 πŸ‘ 2768 πŸ” 466 πŸ’¬ 38 πŸ“Œ 16
Preview
X Is Drowning in Disinformation Following US and Israel’s Attack on Iran WIRED has reviewed hundreds of posts on X that promote misleading claims about the locations and scale of the attack.

NEW: X Is *drowning* in disinformation following US and Israel’s attack on Iran. WIRED has reviewed hundreds of posts on X that promote misleading claims about the locations and scale of the attack.

read @davidgilbert.bsky.social:

28.02.2026 22:43 πŸ‘ 1346 πŸ” 548 πŸ’¬ 54 πŸ“Œ 78

we were probably all up last night staring at the ceiling with our own version of the same thought running on endless loop, but mine looked something like this:

I hate these people to a degree that feels simultaneously corrosive to the soul, and also the only righteous response to this kind of evil

28.02.2026 21:30 πŸ‘ 3715 πŸ” 791 πŸ’¬ 7 πŸ“Œ 36

this is just who they are

they do bad things everywhere all the time because they are evil and stupid and constantly indulging their very worst impulses

there’s no twelve dimensional plan here

28.02.2026 17:03 πŸ‘ 2851 πŸ” 570 πŸ’¬ 35 πŸ“Œ 5
Javascript code for a noncentral t cdf produced by Claude. It is simply a call to the normal CDF, which is not correct (though will be a decent approximation with large N).

Javascript code for a noncentral t cdf produced by Claude. It is simply a call to the normal CDF, which is not correct (though will be a decent approximation with large N).

I've been testing Claude to see how well it can "vibe out" a stat. power app that I've already coded completely myself - so I know what I want. It mostly gets things right with animations (those are easily verifiable) but looking into the backend stats code is nightmare inducing (see pic).

28.02.2026 09:22 πŸ‘ 79 πŸ” 23 πŸ’¬ 4 πŸ“Œ 11

Thank you! πŸ˜„β˜ΊοΈ

28.02.2026 07:21 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Preview
The work of creation in the age of AI | Andrew Perfors In which I become an old man yelling futilely at the clouds

Best essay on modern, digital life I think I've read. ht to @cgruenloh.bsky.social

by @perfors.net

It's from February 2024, but it's forever relevant.

perfors.net/blog/creatio...

28.02.2026 07:14 πŸ‘ 5 πŸ” 3 πŸ’¬ 1 πŸ“Œ 0