Zack Dulberg @pianozack Twitter profile | Pikagi

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Zack Dulberg

@pianozack

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Physician & PhD candidate in computational neuroscience @PrincetonNeuro

Joined February 2009

Don't wanna be here? Send us removal request.

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@pianozack

Zack Dulberg

4 months

I am happy to share our latest pre-print, in which we model grieving as a natural solution to the reinforcement learning problem of adapting to loss. Given the amount of grief in the world these days - we thought it was important to better understand it.

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Adapting to loss: A normative account of grief

Grief is a reaction to loss that is observed across human cultures and even in other species. While the particular expressions of grief vary significantly, universal aspects include experiences of...

www.biorxiv.org

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@pianozack

Zack Dulberg

8 months

I am running for DEI Officer of the @Princeton University graduate student government. I don't need to explain the harm that DEI has done and will continue to do. I intend to do what I can to stop it. I encourage whoever can to do the same. Please repost to help me win!

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@pianozack

Zack Dulberg

6 months

@kareem_carr How would you falsify this model?

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@pianozack

Zack Dulberg

3 months

Being stalked on @Princeton campus. This sparked the crowd to chant "we don't want no zionists here", as if their harrassment wasn't obvious enough.

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@pianozack

Zack Dulberg

5 months

@yipengGe You stole someone's land? Why are you still living on it?

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@pianozack

Zack Dulberg

7 months

@HowardA_AtLaw Never use identity as your basis for argument, it will backfire on you

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@pianozack

Zack Dulberg

3 months

A wildcard from the @Princeton encampment - allying with North Korea! (Sorry for the audio - sane people are partying next door)

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@pianozack

Zack Dulberg

9 months

@existentialcoms In the off chance that you can read, check out article 19 of the Geneva conventions

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@pianozack

Zack Dulberg

1 year

Do you ever feel pulled in different directions, as if there is a tug of war going on inside your head? Our new PNAS suggests one reason why: When we have to balance many needs, having a dedicated sub-agent for each need has practical benefits.

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Having multiple selves helps learning agents explore and adapt in complex changing worlds | PNAS

Satisfying a variety of conflicting needs in a changing environment is a fundamental challenge for any adaptive agent. Here, we show that designing...

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@pianozack

Zack Dulberg

8 months

@maricohen95 @emilyfoxkaplan When hamas and Iran say globalize the intifada, what do you think they mean?

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@pianozack

Zack Dulberg

8 months

@muhammadshehad2 I don't understand, do people typically call their lawyers and go to trial in a war?

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@pianozack

Zack Dulberg

2 years

@ianbremmer if they send iron dome to ukraine, russia will send heavy weaponry to iran. israel has tough choice between US loyalty and avoiding existential threats

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@pianozack

Zack Dulberg

10 months

@Princeton Thank you for the strong language, but Jewish students should have been mentioned in particular. Leaving them out from a statement like this is not appropriate and does not make them feel supported.

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@pianozack

Zack Dulberg

8 months

@JeffDean I thought gemeni referred to the twins of intelligence - human and artificial side by side

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@pianozack

Zack Dulberg

6 months

@theafroaussie You: "they have nowhere safe to go!!" Egypt: "here's a safe place they can go" You: "how dare you."

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@pianozack

Zack Dulberg

7 months

@StopAntisemites @metpoliceuk I think he mis-spoke, and meant to say 'we must not'

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@pianozack

Zack Dulberg

2 years

@keithfrankish Distortionism - our mind filters and distorts information about itself, and ends up with what seems like qualia. Key here is that distortions can still contain veridal structure, and also exist on a continuum (mild to severe distortion).

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@pianozack

Zack Dulberg

8 months

Princeton punished me for fighting to fix DEI and antisemitism on campus

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Princeton punished me for fighting to fix DEI and antisemitism on...

The past two months have made clear to me that institutional DEI tolerates — and thereby encourages — the particularly awful hatred of antisemitism.

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@pianozack

Zack Dulberg

8 months

Some highlights from today's Princeton protest for Palestine: "We don't want zionism here" "Judaism yes, zionism no!" (??) "Zionism's got to go" with honorable mention to telling an older woman she looks "like shit" and is "a little prostitute", and to protesting Starbucks for

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@pianozack

Zack Dulberg

6 months

@yipengGe Israel is the best example of successful decolonization. What you're doing is an example of racism.

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@pianozack

Zack Dulberg

5 months

@fchollet I don't think so. Most complex problems will require an agent to model itself. Self-models and their recurrent dynamics should be closely related to, if not the same as, consciousness

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@pianozack

Zack Dulberg

5 months

@agelender Most jews wouldn't consider you jewish

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@pianozack

Zack Dulberg

4 months

Norman Finkelstein says whether or not to condemn the Hamas attacks is a "moral quandry". Only for you, @normfinkelstein

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@pianozack

Zack Dulberg

3 years

@cityofhamilton Will these vaccines be available for jews?

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@pianozack

Zack Dulberg

1 year

@_ZachFoster Yes! Like when jews were ethnically cleansed from Gaza?

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@pianozack

Zack Dulberg

10 months

@timnitGebru Agreed, very difficult for jews to feel safe these days

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@pianozack

Zack Dulberg

8 months

@yudapearl I am now running for Princeton DEI officer to do something about this. Please re-post so I get some attention for this!

@pianozack

Zack Dulberg

8 months

I am running for DEI Officer of the @Princeton University graduate student government. I don't need to explain the harm that DEI has done and will continue to do. I intend to do what I can to stop it. I encourage whoever can to do the same. Please repost to help me win!

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@pianozack

Zack Dulberg

10 months

The Jewish community on campus is becoming increasingly distressed that @Princeton has not yet put out a statement of unequivocal support for the victims in Israel, as so many other governments and institutions have already done.

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@pianozack

Zack Dulberg

2 years

@SethBaum Have you considered that these probability estimates themselves affect the risk? Maybe we should treat this like the second order chaotic system it is and be careful not to make self-fulfilling prophecies of armageddon?

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@pianozack

Zack Dulberg

10 months

@jvplive Kapos

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@pianozack

Zack Dulberg

6 months

@m7mdkurd What does it mean to 'dezionise' a zionist?

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@pianozack

Zack Dulberg

10 months

@YousefMunayyer You misspelled Hamas

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@pianozack

Zack Dulberg

8 months

@kthalps the former

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@pianozack

Zack Dulberg

4 months

@JustinTrudeau Maybe try listening to his example

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Canada should provide Israel with 'complete, blanket support,' says Brian Mulroney | CBC News

Former prime minister Brian Mulroney says Canada should fully support Israel in its fight against Hamas — but warns that this country now has only limited influence in global affairs.

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@pianozack

Zack Dulberg

6 months

@Toronto4P Climbing other structures is also what I would do if my real goal was to target Mount Sinai hospital with plausible deniability. Smart.

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@pianozack

Zack Dulberg

4 months

And, it's gone. He just "doesn't have it in him" to condemn Hamas. "We told you so", he says to the Jews, instead.

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@pianozack

Zack Dulberg

8 months

@BootsRiley I don't understand

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@pianozack

Zack Dulberg

8 months

@kthalps

Psychological projection - Wikipedia

en.m.wikipedia.org

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@pianozack

Zack Dulberg

7 months

@OgbeniDemola Was it because they were African? Or because there were thousands of victims rather than millions?

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@pianozack

Zack Dulberg

8 months

On AI alignment: We are making a dangerous mistake One of the biggest issues of our time is the so-called “AI alignment problem”. In plain terms, if we manage to build an artificial intelligence, how can we prevent it from hurting us? The problem is urgent because AI has the

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@pianozack

Zack Dulberg

7 months

@PragmaticMaemae @StopAntisemites @metpoliceuk It's not true, it doesn't make sense in context

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@pianozack

Zack Dulberg

9 months

@caitoz Abolishing the Jewish state: proudly non-genocidal for 75 years!

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@pianozack

Zack Dulberg

8 months

@agelender Land back for the jews from Arab countries too right?

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@pianozack

Zack Dulberg

7 months

Posters have been up for a week in @Princeton University buildings on bulletin boards, displaying bullets growing on olive trees. In the context of repeated calls for a violent global uprising against Jews. From a series that also depicts the burning of Israel and the Hamas

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@pianozack

Zack Dulberg

6 months

@yipengGe I trained alongside @yipengGe in Ottawa (actually supervised him during my residency) - I never saw racism or discrimination there, I do not know where he is getting this from

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@pianozack

Zack Dulberg

4 months

Missed the recording, but he just said that October 7th was Hamas "Mowing the Lawn".

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@pianozack

Zack Dulberg

8 months

#canadastandswithisrael

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@pianozack

Zack Dulberg

9 months

@GaryMarcus Because.... they trained it on sinusoids and lines? This PAPER fails to generalize, not the AI it claims to be talking about

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@pianozack

Zack Dulberg

8 months

@aaronjmate I've embraced the term Kapo. This Kapo exemplifies why.

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@pianozack

Zack Dulberg

8 months

@mmitchell_ai FYI, men and women can both have tantrums. She is certainly acting like whining, hateful child

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@pianozack

Zack Dulberg

1 year

@MillerLabMIT @DrYohanJohn No matter what story we end up with, it still has to account for the unique deficits described by neurologists, many of which can be localized, and even if they can't, modularity could still apply over indices other than location.

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@pianozack

Zack Dulberg

9 months

@caitoz Just because you say it doesn't make it true

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@pianozack

Zack Dulberg

2 years

@monitoringbias Two possible perceptions: the world doesn't tolerate antisemitism vs jews don't tolerate being challenged. The first is the truth. If you believe the second, that isn't proving Kanye right, it's just being wrong

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@pianozack

Zack Dulberg

6 months

@WillSloanEsq They aren't lying

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@pianozack

Zack Dulberg

4 years

@davidfrum The far right feels safe inside rigid structures, which, like a locked house, exclude some things adaptively (child sexuality) and other things harmfully (strangers/Jews). Structural rigidity that keeps out perceived danger in general is the 3rd variable causing both positions.

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@pianozack

Zack Dulberg

9 months

@sumdepony @existentialcoms which hospital in particular? and yes it could easily be met

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@pianozack

Zack Dulberg

2 years

@AllenFrancesMD I hear you, the saudis won't have nearly enough influence over twitter if this goes through!!

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@pianozack

Zack Dulberg

7 months

@Daniel_Sugarman I thought the butcher of darfur refers to al-bashir

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@pianozack

Zack Dulberg

9 months

@caitoz you almost got it!

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@pianozack

Zack Dulberg

10 months

This is not the message @Princeton wants to send. I urge the administration to act, with decisive language that supports Israeli victims, their absolute right to defend themselves, and the Jewish students on campus who are deeply affected.

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@pianozack

Zack Dulberg

4 months

Norm explicitly calls for the destruction of Israel

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@pianozack

Zack Dulberg

7 months

@habib_b Assassination.

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@pianozack

Zack Dulberg

8 months

@yudapearl @Princeton needs to follow suit to counter what is happening here:

@pianozack

Zack Dulberg

8 months

Some highlights from today's Princeton protest for Palestine: "We don't want zionism here" "Judaism yes, zionism no!" (??) "Zionism's got to go" with honorable mention to telling an older woman she looks "like shit" and is "a little prostitute", and to protesting Starbucks for

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@pianozack

Zack Dulberg

10 months

The longer this silence goes on, the more likely it will be construed as tacit support for an ISIS-style massacre that involved parading raped bodies of women in the streets, murdering children in front of their parents, and, taking of hundreds of civilian hostages.

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@pianozack

Zack Dulberg

3 years

Check out mine and @TaylorWWebb 's recent work on a neural network model of counting, accepted as a talk at #CogSci2021 !

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@pianozack

Zack Dulberg

8 months

@ggreenwald What do you think Hamas, Iran and Hezbollah mean when they call to "globalize the intifada"? And what message do you think is sent when college students parrot that call?

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@pianozack

Zack Dulberg

8 months

@AbstractIdea12 @realchrisrufo @Princeton Ya... by noble I mean defined as I would like them... diversity of thought, equality of opportunity, true inclusivity (but which also understands the paradox of tolerance)

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@pianozack

Zack Dulberg

1 year

@_ZachFoster you're not an honest person

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@pianozack

Zack Dulberg

8 months

@aliaelkattan @GaryMarcus @timnitGebru What genocide?

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@pianozack

Zack Dulberg

2 months

@VerminusM @KimIversenShow That's an insult to patients with brain damage

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@pianozack

Zack Dulberg

4 years

@DavidJuurlink @Clin_Tox How many of these events can be explained by coincidence given base rate of these conditions and marijuana use? Harder counterfactual - if cannabis really was a sufficient cause, how many events would have happened anyway, just from a different common stressor?

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@pianozack

Zack Dulberg

2 years

@kareem_carr Dimension reduction is a neutral and indespensible function of intelligence. Can be used for ill but so can maintaining high dimensional representations, which can separate us in the same way it aids discrimination in categorization tasks

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@pianozack

Zack Dulberg

10 months

@timnitGebru solidarity with everyone who lost their job for a really good reason, makes sense!

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@pianozack

Zack Dulberg

3 years

@DrEricDing I don't understand - why is <5 incidence highest in prior waves as well?

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@pianozack

Zack Dulberg

1 year

@KordingLab I think there is only a partial gap - representations in the brain can be high or low dimensional (i.e. ). Therefore, low-d perturbations should be able to interrogate low-d representations. We lack high-d perturbation techniques other than natural stimuli

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@pianozack

Zack Dulberg

7 months

@yipengGe The practice of medicine is inherently non-political, and needs to stay that way. Everyone gets the highest standard of care. Nobody gets special treatment. We treat Nazis if they come in. Who, by the way, were the biggest proponents of the notion that "medicine is political"

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@pianozack

Zack Dulberg

10 months

@timnitGebru I know right? At least you have some self-awareness though, that counts for something

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@pianozack

Zack Dulberg

1 year

@RCarhartHarris There is not only one value function, so might be better cast as the meta-objective "accommodate the highest diversity of objective functions while keeping conflict within an appropriate bound (i.e. entropy-energy homeostasis, possibly also what brains are doing)"

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@pianozack

Zack Dulberg

4 months

@pianozack

Zack Dulberg

4 months

South Africa, our shining example

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@pianozack

Zack Dulberg

2 years

@kareem_carr you have the causal graph backwards

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@pianozack

Zack Dulberg

7 months

@yipengGe It's sad that a president who could not properly condemn calls for genocide in front of congress, committed repeated acts of plagiarism, and failed to respond to campus antisemitism, did not even apologize, but rather externalized all blame onto "racists". Embarrassing.

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@pianozack

Zack Dulberg

7 months

@briebriejoy Correct

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@pianozack

Zack Dulberg

7 months

@PragmaticMaemae @StopAntisemites @metpoliceuk That's not how the law works. You're angry, get off the internet

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@pianozack

Zack Dulberg

8 months

@NAChristakis @Princeton @nypost Thank you for your support - really just want to get back to doing science and hoping this all goes away soon (it won't)

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@pianozack

Zack Dulberg

3 years

@fchollet that brief but intuitive realization of being billions of years old feels so strange I barely know what to do with it

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@pianozack

Zack Dulberg

3 years

@Pooyahat What are your thoughts on BDS?

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@pianozack

Zack Dulberg

3 months

@Lowkey0nline He is talking about people getting gun licenses in order to defend themselves if they are attacked. And he says everyone *here*, i.e. the Toronto Police, should be scared, if citizens are scared enough that they are resorting to arming themselves. It was not a threat or

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@pianozack

Zack Dulberg

10 months

@LolOverruled And what was it that made them unsafe for the thousands of years before Israel existed?

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@pianozack

Zack Dulberg

1 year

@JDaviesPhD If you have headaches from a tumor growing in your brain, you aren't "suffering from symptoms of cancer", you're having headaches from a tumor growing in your brain

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@pianozack

Zack Dulberg

10 months

@timnitGebru History really is repeating itself

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@pianozack

Zack Dulberg

10 months

@wesg52 @tegmark Very similar findings to No doubt anymore that transformers learn world models @GaryMarcus

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Evolutionary-scale prediction of atomic-level protein structure with a language model

A protein language model enables structure prediction and analysis of more than 600 million metagenomic proteins.

www.science.org

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@pianozack

Zack Dulberg

5 months

@Daniel_Sugarman There is a different and much stronger point - many zionists were Russian, and the word "colony" did not mean the same thing to them as it does to us now:

Colony (Russian Empire) - Wikipedia

en.m.wikipedia.org

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@pianozack

Zack Dulberg

5 months

@yipengGe Maybe don't spread blood libels

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@pianozack

Zack Dulberg

4 months

We could then optimize grief parameters to provide precise answers to questions like: How painful should grief be? How sensitive should an agent be to their grief? How long should the agent dwell in grief? And how long should grief last?

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@pianozack

Zack Dulberg

6 months

Rehearsing a revolution on @Princeton grounds. Their words, not mine.

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@pianozack

Zack Dulberg

7 months

@kthalps Talking to yourself is perfectly normal, don't worry!!

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@pianozack

Zack Dulberg

9 months

@caitoz Nice knowing you!!

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@pianozack

Zack Dulberg

7 months

@jengland004 @EylonALevy Being wrong is a hell of a drug

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@pianozack

Zack Dulberg

4 years

@EricRWeinstein The concept of reflexivity. What happens to objectivity when you turn systems of understanding back on themselves? Probably the only sensible idea the postmodernists have come up with!

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@pianozack

Zack Dulberg

10 months

@elonmusk Yes but this isn't revenge: there is a legitimate military objective to eliminate Hamas

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