Tomer Ullman
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tomerullman.bsky.social
Tomer Ullman
@tomerullman.bsky.social
Associate Professor, Department of Psychology, Harvard University. Computation, cognition, development.
November 20, 2025 at 8:56 PM
Reposted by Tomer Ullman
How and when and why do children use loopholes?

Our research on this hits the Big Time*:

(* Big time = SciShow, with Hank Greene)

youtu.be/f7FhKywXRGk?...

(original paper in question: srcd.onlinelibrary.wiley.com/doi/abs/10.1...)
Lying and 6 Other Things Babies Learn Early
YouTube video by SciShow
youtu.be
November 18, 2025 at 7:49 PM
How and when and why do children use loopholes?

Our research on this hits the Big Time*:

(* Big time = SciShow, with Hank Greene)

youtu.be/f7FhKywXRGk?...

(original paper in question: srcd.onlinelibrary.wiley.com/doi/abs/10.1...)
Lying and 6 Other Things Babies Learn Early
YouTube video by SciShow
youtu.be
November 18, 2025 at 7:49 PM
I proposed these names for new AI-induced Psychoses a few months ago as a joke but the emails I've been getting have pushed me to think Banotti Mania may actually be a thing
AI heralds a golden age for clinicians who want to name new disorders; just throwing some out there:

Fournier Jitters: a particular form of anxiety, in which the person affected cannot make a decision or voice opinion without checking first with an AI assistant
November 18, 2025 at 1:59 PM
Officially out in the current issue of Trends in Cognitive Sciences:

"Physics versus graphics as an organizing dichotomy in cognition"

www.cell.com/trends/cogni...
November 17, 2025 at 1:55 PM
I can't claim to understand what it's like to be that guy from Memento, but I do have to pull up my phone and scroll through photos in order to answer the question 'so what did you do this weekend?'
November 16, 2025 at 8:40 PM
November 16, 2025 at 5:51 PM
something i noticed in preparing a class
November 14, 2025 at 2:01 PM
wonder if I can re-arranging this Epstein name dump to the tune of We Didn't Start the Fire
November 14, 2025 at 3:30 AM
dear academic book presses 👋

Don't Do This 🤗
November 12, 2025 at 1:58 PM
oh wowww
November 12, 2025 at 5:01 AM
A chiliagon is a 1000-sided polygon, famous in philosophy for Descartes using it as an example of the diff b/w imagining something visually and conceptualizing it.

Anyway I tried to get Gemini to draw it
November 11, 2025 at 2:09 PM
Reposted by Tomer Ullman
ICYMI

I wrote a funny book to trick children into reading literature!
After generations of family adventures, Sawyer Lee is determined to sink in the couch! The problem is that it will take a regrettable amount of energy for him to escape the mysteries, conspiracies, and gourd-based festivities the whole town throws his way.

us.macmillan.com/books/978037...
November 10, 2025 at 10:45 PM
new pre-print,

"Chain of Time: In-Context Physical Simulation with Image Generation Models"

(by Wang, Bigelow, Li, and me)

arxiv.org/abs/2511.00110
November 10, 2025 at 1:57 PM
can we all agree on a short designator to the paragraph "LLMs have proven surprisingly useful at (X), but are still not great at (Y), and we don't uite understand what's going on" and just move to using that?

Feels like it would save time/space for many papers to both Reader and Writer.
November 9, 2025 at 10:33 PM
[whispering to date while watching Frankenstein when Frankenstein first appears on the screen] That's The Monster
November 8, 2025 at 2:46 PM
the girl (9) made a postcard for Illinois. I'm not exactly sure on the "Why" but full marks for the "What"
November 7, 2025 at 1:48 PM
PART 2: LETTERS

1. "warn" people ahead of time that you are going to ask them for letters, it takes a while to write these.

2. Some ppl think more letters = better. I don't. Letters are not additive, they average. If you have 4 letters that correspond to [8, 8, 9, 6], just send in the top 3.
PART 1: THE RESEARCH STATEMENT

This is about 'WHAT is it that you want to do, why this PLACE/PI specifically, why are YOU the relevant person to be doing THIS'.

Standard structure:

There is no one right way to do this, but here is a good breakdown:
November 6, 2025 at 7:59 PM
It’s grad school application season, and I wanted to give some public advice.

Caveats:
-*-*-*-*


> These are my opinions, based on my experiences, they are not secret tricks or guarantees

> They are general guidelines, not meant to cover a host of idiosyncrasies and special cases
November 6, 2025 at 2:55 PM
November 6, 2025 at 1:55 PM
for various reasons I had to briefly explain the plot of Hamlet to my seminar class yesterday (turns out none of the students had read or seen it), and so I got to use the phrase "Hamlet is Big Mad about this"
November 5, 2025 at 2:01 PM
mid-semester shout out to Andrew Shtulman's book "Learning to Imagine"; I'm teaching a seminar on imagination and pretense, and the book has fun and useful, and leads to interesting discussions
November 4, 2025 at 1:44 PM
Nature suggests you use their "Manuscript Adviser" bot to get advice before submitting

I uploaded the classic Watson & Crick paper about DNA structure, and the Adviser had this to say about one of the greatest paper endings of the century:
November 3, 2025 at 1:55 PM
as above, so below
November 2, 2025 at 3:17 PM
מסורת האלווין: בבוקר אחרי, הילדים מוסרים את מה שנשאר תמורת מתנה, וזה מוסדר בחוזה.

(דרך ללמוד על פרצות בחוק. בגרסאות קודמות של החוזה לא היה כתוב איזה מתנה הם יקבלו ומתי, למשל)
November 1, 2025 at 4:08 PM