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marojejian

3,024 karmajoined 15 years ago

Submissions

How dementia is being defeated

economist.com
3 points·by marojejian·2 days ago·5 comments

Chickadees cheat on their partner more with males better at navigation

elifesciences.org
2 points·by marojejian·3 days ago·1 comments

CatchCat – Pokémon Go for Cats, IRL

catchcat.lol
1 points·by marojejian·3 days ago·1 comments

GLP-1's help women find work, and men to leave their partners

ft.com
4 points·by marojejian·11 days ago·4 comments

Differentiation drives the erosion of positivity on social media

pnas.org
4 points·by marojejian·12 days ago·2 comments

Supreme Court takes sledgehammer to federal regulatory structure

npr.org
83 points·by marojejian·13 days ago·124 comments

GLP-1 drugs increase women's marriage and employment rates

hu-my.sharepoint.com
1 points·by marojejian·17 days ago·6 comments

Fruit fly sperm are almost as the the fly. How do they stay untangled?

nytimes.com
3 points·by marojejian·18 days ago·1 comments

AI systems out-persuade expert humans

arxiv.org
3 points·by marojejian·20 days ago·2 comments

Plants keep tabs on the competition, and adapt growth patterns

economist.com
4 points·by marojejian·23 days ago·1 comments

Vinod Khosla: We will need a new tax code for the wealth AI creates

ft.com
3 points·by marojejian·last month·2 comments

Bumblebees can solve problems like chimps and elephants

npr.org
7 points·by marojejian·last month·1 comments

The plan to give Americans an equity stake in AI

ft.com
3 points·by marojejian·last month·3 comments

The British Used to Sound Like We Did

nytimes.com
2 points·by marojejian·last month·1 comments

Multimember Districts? Ranked Choice? This Is How to Fix Our Elections

nytimes.com
7 points·by marojejian·last month·2 comments

Microsoft releases search engine for use by ML agents

searchengineland.com
7 points·by marojejian·last month·1 comments

Your phone can use tiny skin-color changes to measure your heart rate

nature.com
5 points·by marojejian·last month·1 comments

4K years ago, Mohenjo-daro grew more equal over time

archaeologymag.com
118 points·by marojejian·last month·56 comments

Pigeons navigate using magnetic sensors in their livers

phys.org
7 points·by marojejian·last month·1 comments

The Golden Age of Asking Questions

dropbox.com
3 points·by marojejian·last month·0 comments

comments

marojejian
·2 days ago·discuss
Correct archive link: https://archive.is/2026.07.11-040454/https://www.economist.c...
marojejian
·2 days ago·discuss
Oops. Here is a good one: https://archive.is/2026.07.11-040454/https://www.economist.c...
marojejian
·2 days ago·discuss
archive: https://archive.is/mai5w

Impressed by the progress. Also interesting how much stronger depression is as a risk factor, vs. all others.
marojejian
·3 days ago·discuss
This is why men don't ask for directions :P
marojejian
·3 days ago·discuss
Sister shared this with me. Actually looks cool.

They try to verify you are taking a live picture, so you get real cats.

more info: https://cheezburger.com/45806853/pokmon-go-but-for-cats-free...
marojejian
·11 days ago·discuss
archive: https://archive.is/zx8Ba

Here's the full research article, from the researcher's website: https://hu-my.sharepoint.com/personal/rdiamond_fas_harvard_e...

>Single women’s marriage/cohabitation rates rise by 29 percentage points and employment among baseline nonemployed women rises 27 percentage points after six or more quarters.

These effect sizes are huge. That and the drama of the findings provokes general skepticism. So I welcome some experienced folks picking this apart.
marojejian
·11 days ago·discuss
SIgh, just seeing the comments here. I get emails for replies to my comments, but not to postings, so never saw these.

The link was one provided by the researcher, but HN stripped out al the params that allowed it to be viewed. I need to remember it does that...

or... HN could be improved a tad, ;-P

I found another article that covers this without a paywall, and will share that.
marojejian
·12 days ago·discuss
full article via preprint: https://osf.io/preprints/psyarxiv/7fjpr_v2

essentially negativity progresses since: >it is easier to differentiate oneself through negative comments than through positive comments

I find this interesting in two respects:

1) I agree with the finding about social media

2) In my experience this effect is broadly true beyond the internet and before it:

Journalism skews negative because it is easier to capture your attention with the bad vs. the good (in part due to human loss aversion).

This is my experience in the domain of art as well. Most high-status books and stories deal with negative themes and deeply flawed characters. There is a basic assumption that somehow the negative has more artistic value than the positive, and perhaps the positive is necessarily bland and uniform.

e.g. "All happy families are alike; each unhappy family is unhappy in its own way."

In my experience this is wrong. It is however true that its easier to come up with specific negative art.

apparently this is captured in a principle taken from the quote above: https://en.wikipedia.org/wiki/Anna_Karenina_principle

Positive states have lower entropy: there are fewer of them. There are many more ways to fail. Thus it's easier to come up with novel negative things vs. positive.

I think therefore the negative slant to our art represents a culture of laziness in our institutions. Part of this is the result of selection: unhappy artists succeed more easily, rise to levels of authority, and assume that anyone who does not share their negative view and aesthetics are bland.

It's sad though. I think they believe all happy families are alike because they have never truly understood even one happy person.

The implications are big: a society led by such sad people becomes a self fulfilling prophecy.
marojejian
·17 days ago·discuss
OK, these effect sizes are huge. That and the drama of the findings provokes general skepticism. So I welcome some experienced folks picking this apart.

>Single women’s marriage/cohabitation rates rise by 29 percentage points and employment among baseline nonemployed women rises 27 percentage points after six or more quarters.
marojejian
·18 days ago·discuss
Gift link: https://www.nytimes.com/2026/06/24/science/giant-fruit-fly-s...

This seminal discovery is nuts. And interesting way beyond the puns.

Each sperm is almost as long as the fly itself. They seem to function collectively like an organ.

Even after reading this I don't understand at all how they avoid tangles:

>sperm don’t become tangled because they’re constantly moving, sliding past one another

Yeah, I've tried this with my charging cords and it doesn't work.

Microbiology truly is alien nanotechnology.
marojejian
·20 days ago·discuss
> We found converging evidence that AI's advantage stemmed from rapidly deploying larger quantities of information

This jibes with previous results in LLMs effectiveness at combatting disinformation: https://mitsloan.mit.edu/ideas-made-to-matter/mit-study-ai-c...

>in a series of four preregistered experiments

Love seeing preregistered research!
marojejian
·23 days ago·discuss
archive: https://archive.is/DmK2v#selection-1073.0-1073.39
marojejian
·last month·discuss
archive https://archive.is/K5s2A#selection-1457.0-1457.12

OK, it's temping for me to make this comment about Vinod and perceptions of his past actions. But he's not important in the larger picture, and this issue definitely is.

Overall, we absolutely need to devote a lot of energy and discussion to this question now, since there are a lot of options, and building consensus and implementing anything smoothly will be slow. If we wait too long, we tempt disaster due to factors like unrest or missing the window of control. For example, the world is getting populist leaders now because we failed to address the inequality of growth in the last 30 years. So the more intelligent, powerful people raise this issue now, the better.

I'm not sure about each of these options yet. Definitely the change to capital gains makes sense (cough, OK I must gesture here at the carried interest rule for a moment...).

Sovereign wealth funds scare me. A fundamental approach where the government owns and directs capital sets up the wrong incentives. Over time, it risks privileging the elite, or at best the leviathan, over the median individual.

Rather, my gut is to pursue a broader distribution of wealth & power, e.g. by:

1) reducing the barriers to capital value, e.g. through promoting open source software, and eroding software IP

2) creating a systemic forcing function reducing inequality. The ideal one would be progressive wealth tax. Of course this is incredibly difficult in practice.

3) creating friction agains large corporations. this would need to be a totally new approach to antitrust. beyond eroding IP, I'm not sure of the best way to do this generally, even in ideal terms (perhaps progressive taxes on capital value appreciation?)
marojejian
·last month·discuss
paper: Spontaneous problem-solving in bumble bees https://www.science.org/doi/10.1126/science.ady1618
marojejian
·last month·discuss
Taking action to even the distribution of wealth & power anywhere in the world is a good idea. this has always been true. The Machine Learning Revolution is just making it more urgently true.

That said it's a bad idea to have the state:

- pick the winners (who will just end up being the ones who lobby the most)

- pick the industry (what even counts as "AI"? machine learning is applicable to to every domain)
marojejian
·last month·discuss
archive: https://archive.is/ainRf
marojejian
·last month·discuss
Having done my share of pipetting back in the day, I have no problem letting my ML overlords take that part of the job.

for good or ill, overall biology is so complex and hard to experiment with, ML progress will be bottlenecked by other factors at a level of productivity much lower relative to information technology. But it's still be a huge deal.
marojejian
·last month·discuss
gift link: https://www.nytimes.com/2026/06/04/opinion/british-american-...
marojejian
·last month·discuss
gift link: https://www.nytimes.com/2026/06/04/opinion/voting-gerrymande...

Every system has its tradeoffs. But I am sold on the idea that our current one is a major contributor to the degradation of our institutions. The options here would likely be better.

Sure it's hard to make any changes to our entrenched system. But at least these changes are non-partisan. Of course since it hurts the current system both parties will cooperate to defeat change.

Thus I call: "moderates of the US, unite!"

:P
marojejian
·last month·discuss
Sure, I get that API's are an essential thing.

Nevertheless, I feel uncomfortable when we are entering an era when the software we design is more for use by machines than by humans.