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José Luis Ricón Fernández de la Puente Profile
José Luis Ricón Fernández de la Puente

@ArtirKel

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18,339
Following
1,063
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6,498
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171,570

Head of Theory at @RetroBio_ 🇪🇸➡🇬🇧➡🇺🇸

San Francisco, CA
Joined April 2007
Don't wanna be here? Send us removal request.
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@ArtirKel
José Luis Ricón Fernández de la Puente
4 years
@natematias @Miles_Brundage Rewards programme: Rewards paid:
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@ArtirKel
José Luis Ricón Fernández de la Puente
3 years
TIL astrology is real, if you work in semiconductors
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@ArtirKel
José Luis Ricón Fernández de la Puente
1 year
Isn't it kind of weird that teeth grow twice? No teeth (0) seems normal. Teeth once (1) seems also ok. Teeth all the time (Infinite) like in sharks also seems reasonable. Two (The default in humans) strikes me as a weird choice.
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@ArtirKel
José Luis Ricón Fernández de la Puente
1 year
At dinner right now: - can't eat pork, I'm Jewish - can't eat chicken, because EA - can't eat beef because Hindu - can't eat tuna because mercury But lamb brings us together
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@ArtirKel
José Luis Ricón Fernández de la Puente
5 years
A Thiel Fellowship, but to drop out of software and do something different.
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@ArtirKel
José Luis Ricón Fernández de la Puente
1 year
So far I have found ChatGPT useful for coding, and not much more. Is this everyone's general view?
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@ArtirKel
José Luis Ricón Fernández de la Puente
1 year
Trying the new OpenAI model
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@ArtirKel
José Luis Ricón Fernández de la Puente
1 year
The best possible news for a US immigrant like me 🗽🦅🚀
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@ArtirKel
José Luis Ricón Fernández de la Puente
3 years
Elon Musk's secret life goal: To show that markets are way more inefficient than we thought by repeatedly making tons of money doing what various industries have strong economic incentives to do but don't do (reusable rockets, 10x cheaper batteries).
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@ArtirKel
José Luis Ricón Fernández de la Puente
10 months
Post Oppenheimer, someone outside the theater says "But he didn't invent anything, he just told people what to do... well I guess he picked those that did" Indeed, the central thing of management. At worst, taking credit for other people's work. At best, dreaming into existence
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@ArtirKel
José Luis Ricón Fernández de la Puente
7 years
Probability of choosing STEM, SEH (Socsci&Humanities/Education/Health) and business, by SES and gender, in the US.
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@ArtirKel
José Luis Ricón Fernández de la Puente
2 years
There had been a longstanding debate in biosecurity circles whether one could synthesize smallpox from its sequence. One guy was like ayylmao and had it made (horsepox, as a proof of concept, protocol is the same for smallpox)
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@ArtirKel
José Luis Ricón Fernández de la Puente
5 years
@jnymnz Tiny brain: Buddhism, stoicism Galaxy brain: Dopamine fasting
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@ArtirKel
José Luis Ricón Fernández de la Puente
4 years
Basically everything that has ever been said in the "science is broken" conversation (with some baseline plausibility; disaregarding for now relative importances):
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@ArtirKel
José Luis Ricón Fernández de la Puente
5 months
I have around 5000 PDFs and documents that I want to LLM through, what's the best current way? ie I want to be able to ask things like "What do we know about X?" "Show me some documents that discuss Y" etc.
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@ArtirKel
José Luis Ricón Fernández de la Puente
6 years
I'm looking at google street view pics of San Francisco and it's surprising how low density the housing is. Madrid and SF have similar areas (see pic), yet Madrid has almost 4x the population.
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@ArtirKel
José Luis Ricón Fernández de la Puente
6 months
Wow Sam went through the Steve jobs arc so fast. At an accelerated pace dareisay
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@ArtirKel
José Luis Ricón Fernández de la Puente
2 years
@tayroga Quotes naval on a date 🚩🚩🚩🚩🚩
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@ArtirKel
José Luis Ricón Fernández de la Puente
3 years
How it started (Feb 2020), how it's going (Oct 2021). Thanks @asterainstitute & @BuckInstitute for making it possible!
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@ArtirKel
José Luis Ricón Fernández de la Puente
3 years
Tired: Covid was a Chinese bioweapon Wired: Covid was orchestrated by the GMU Econ department to a) increase preparation for future serious, Spanish flu-tier pandemics and importantly b) increase economic growth by accelerating the transition to remote
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@ArtirKel
José Luis Ricón Fernández de la Puente
1 year
For a while everyone was like "But partial reprogramming has never extended lifespan in wild type mice". Now it has (As I expected it eventually would):
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@ArtirKel
José Luis Ricón Fernández de la Puente
4 years
Cool-shit futurism (space colonization, moon telescopes, tech for the sake of tech to some extent) vs cozy futurism (urban reform, renewable energy, solving climate change; focusing on specific problems and having tech as an ends) are categories I've been thinking about recently
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@ArtirKel
José Luis Ricón Fernández de la Puente
1 year
Today is my first day at @RetroBio_ ! Excited to join an amazing team working on therapies to extend healthy human life :))
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@ArtirKel
José Luis Ricón Fernández de la Puente
7 years
Has topology gone too far? (via Mathematical Mathematics Memes)
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@ArtirKel
José Luis Ricón Fernández de la Puente
2 years
Today I turn 30. Reply with life advice for incoming decade.
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@ArtirKel
José Luis Ricón Fernández de la Puente
2 years
@marannelson @josaaay10 My TSA shitpost was when they asked me the "Why are you coming to the US" I replied "To make science great again", he loled and let me through
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@ArtirKel
José Luis Ricón Fernández de la Puente
3 years
The covers of Cell Metabolism are amazing
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@ArtirKel
José Luis Ricón Fernández de la Puente
4 years
@micsolana Every non-billionaire is a policy failure
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@ArtirKel
José Luis Ricón Fernández de la Puente
2 years
There's a gigabrain post to be written that starts from the observation that there are potential Feynmans trapped in Jane Street, continues with the suggestion that finance should be taxed and finishes arguing that that's the highest leverage metascience intervention.
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@ArtirKel
José Luis Ricón Fernández de la Puente
4 years
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@ArtirKel
José Luis Ricón Fernández de la Puente
1 year
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@ArtirKel
José Luis Ricón Fernández de la Puente
4 years
I wrote an article for a new publication, @helloflink on the road towards beating aging and what deep changes it may involve to our lives looking far into the future.
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@ArtirKel
José Luis Ricón Fernández de la Puente
1 year
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@ArtirKel
José Luis Ricón Fernández de la Puente
10 months
@typesfast @bryan_johnson No, probably because it acts as an assassination market
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@ArtirKel
José Luis Ricón Fernández de la Puente
2 years
Scaling tacit knowledge
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@ArtirKel
José Luis Ricón Fernández de la Puente
2 years
"Bringing the scourge back would probably take a small scientific team with little specialized knowledge half a year and cost about $100,000."
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@ArtirKel
José Luis Ricón Fernández de la Puente
2 years
Strong chad energy in this fire commander
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@ArtirKel
José Luis Ricón Fernández de la Puente
3 years
@webdevMason It's reaching levels of lol that wouldn't be believable if done for comedy reasons in a sitcom.
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@ArtirKel
José Luis Ricón Fernández de la Puente
3 years
@AlecStapp @elonmusk Because he made money out of it hah
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@ArtirKel
José Luis Ricón Fernández de la Puente
8 years
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@ArtirKel
José Luis Ricón Fernández de la Puente
2 years
The unreasonable effectiveness of doing, then thinking; vs thinking too much before doing
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@ArtirKel
José Luis Ricón Fernández de la Puente
2 years
To my taste, @dwarkesh_sp is probably the best podcaster there is right now. Both he and @tylercowen research their guests in depth and try to ask novel questions. But Dwarkesh is more serious about intellectual exploration (at the expense of cultural aspects)
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@ArtirKel
José Luis Ricón Fernández de la Puente
1 year
@dr_alphalyrae 2 Tbsp olive oil is OUT 29573 uL olive oil is IN
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@ArtirKel
José Luis Ricón Fernández de la Puente
5 years
@jnymnz Today we call that doing a PhD
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@ArtirKel
José Luis Ricón Fernández de la Puente
2 years
Form I-140 approved today!! One step closer to the green card 🚀 Took ~ 11 months for an EB2-NIW
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@ArtirKel
José Luis Ricón Fernández de la Puente
4 years
After a year of working with the great team at @meet_aiden , followed by another year at @twitter (keeping and growing the same team!) post-acquisition, I'm leaving tomorrow and moving to SF in early November to -checks notes- make science great again. Exciting times!
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@ArtirKel
José Luis Ricón Fernández de la Puente
4 years
@krishashok
Krish Ashok
4 years
Peak Japanese motivational poster
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@ArtirKel
José Luis Ricón Fernández de la Puente
2 years
Artificial wombs may sound weirdly dystopian but it's an equalizing and liberating technology which we should have.
@micsolana
Mike Solana
2 years
we’re not even close to full-term artificial wombs. the tech’s *theoretical* value prop is saving premies. if you’re worried about population collapse my suggestion is to have a baby.
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@ArtirKel
José Luis Ricón Fernández de la Puente
4 years
Yesterday @gwern opened my eyes to the great world of dedicated servers (Like Hetzner or OVH). Compared to AWS, these are approx 6x cheaper (For things like storing data, or hosting your own database with terabytes of data).
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@ArtirKel
José Luis Ricón Fernández de la Puente
2 years
Why is search on Mac hilariously bad? You're on a folder, search something (On Finder) and then it does a full disk search that somehow it manages not to find the file. WTF
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@ArtirKel
José Luis Ricón Fernández de la Puente
3 years
Ok, cashed out of $GME this morning. Farewell to our fellow cosmonauts headed to deep space for an uncertain voyage.
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@ArtirKel
José Luis Ricón Fernández de la Puente
4 years
The Longevity FAQ
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@ArtirKel
José Luis Ricón Fernández de la Puente
2 years
GPT3 are u ok
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@ArtirKel
José Luis Ricón Fernández de la Puente
2 years
Consider a parrot. Compare how likely you think a parrot is conscious* with how likely you think LLMs are conscious. A parrot will never be able to produce output like LaMDA. And yet the parrot is orders of magnitude more likely to be conscious. (*is a subject of experience)
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@ArtirKel
José Luis Ricón Fernández de la Puente
1 year
@Tjdriii @catehall @sashachapin ABS: Always Be Sliding (into people DMs)
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@ArtirKel
José Luis Ricón Fernández de la Puente
8 months
@StuartJRitchie @hamandcheese The only real thing here is Stuart coming out as aphantasiac 🙃
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@ArtirKel
José Luis Ricón Fernández de la Puente
4 years
What do researchers in the aging field believe? A survey
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@ArtirKel
José Luis Ricón Fernández de la Puente
3 years
@juliagalef "Galef CONFESSED to her dislike of standard journalistic practice, sources closer to the author said"
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@ArtirKel
José Luis Ricón Fernández de la Puente
10 months
re that cancer cure, this is not the first time something like this happens. Killing multiple cancer cell lines while sparing normal cells is something that we've seen before with eg 6-thio-2'-deoxyguanosine or MR1 CAR-T. The hard thing is making it work in vivo, in solid tumors
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@ArtirKel
José Luis Ricón Fernández de la Puente
2 years
The perfect floor lamp hasn't been inven—
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@ArtirKel
José Luis Ricón Fernández de la Puente
6 months
[Marked safe from Forbes 30 under 30]
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@ArtirKel
José Luis Ricón Fernández de la Puente
4 years
I recorded a podcast on longevity, fixing science and assorted topics, it's now available:
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@ArtirKel
José Luis Ricón Fernández de la Puente
1 year
Related: I think this is why LLMs are for now overhyped. Software engineers are rightly impressed (as they use them day to day). Many others are like rightly unimpressed. But because a lot of the discourse comes from software land, it seems everyone finds them super useful (?)
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@ArtirKel
José Luis Ricón Fernández de la Puente
4 years
I have become one one with Twitter! @meet_aiden has now been acquired by Twitter, making me a capital-t Tweep.
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@ArtirKel
José Luis Ricón Fernández de la Puente
10 years
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@ArtirKel
José Luis Ricón Fernández de la Puente
4 years
What I'm working on now
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@ArtirKel
José Luis Ricón Fernández de la Puente
2 years
@kulesatony DeepMind has teams competing with each other following different approaches to the same problem. There are leaderboards. Winning team absorbs the rest, then everyone works on the promising approach.
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@ArtirKel
José Luis Ricón Fernández de la Puente
2 years
Today in "WTF I can't believe that valuation", Linktree is valued at over 1.3bn dollars. For a link to a list of links.
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@ArtirKel
José Luis Ricón Fernández de la Puente
2 years
The opposite is true! Programming is joyful because feedback is solid and fast!
@devonzuegel
Devon ☀️
2 years
programming is frustrating because when your mental model is incorrect, feedback is fast and impossible to refute other tasks are don't feel as frustrating because incorrectness doesn't punch us in the face like in programming — but that doesn't mean we're any less wrong 🙃
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@ArtirKel
José Luis Ricón Fernández de la Puente
3 years
This restaurant is spicy in multiple ways
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@ArtirKel
José Luis Ricón Fernández de la Puente
1 year
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@ArtirKel
José Luis Ricón Fernández de la Puente
3 years
Tfw you try to get GPT3 to solve aging
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@ArtirKel
José Luis Ricón Fernández de la Puente
7 months
Get your blood tested randomly! Your doctor will not do this for you but it can be really helpful. I found out I was vitamin D deficient (and started supplementing). A while back I found out my blood iron was too high. I had assumed I got enough sun because Bay Area but wrong.
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@ArtirKel
José Luis Ricón Fernández de la Puente
7 months
Telomeres: everything you always wanted to know
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@ArtirKel
José Luis Ricón Fernández de la Puente
2 years
Tools for thought, half a century of trying to get adoption, half a century of failing. There's a need for a meta-literature on not how people decide, think, or remember, but on why they or do not adopt tools to help them do that. Retention remains a substantial issue.
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@ArtirKel
José Luis Ricón Fernández de la Puente
5 years
When I see someone writing their name as 'X, PhD' I reduce my prior somewhat that what they are about to say is true. Is this generalized?
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@ArtirKel
José Luis Ricón Fernández de la Puente
7 years
The Pyramid of Economic Insight and Virtue, now in meme form. From
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@ArtirKel
José Luis Ricón Fernández de la Puente
1 year
Confused about what FROs are? I made a handy chart for reference
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@ArtirKel
José Luis Ricón Fernández de la Puente
10 months
@sineatrix Incredibly based tweet
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@ArtirKel
José Luis Ricón Fernández de la Puente
5 years
Stoicism: Marie Kondo but for feelings
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@ArtirKel
José Luis Ricón Fernández de la Puente
1 year
Probably the most SF injury possible is dropping a chonky tungsten ball on my finger
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@ArtirKel
José Luis Ricón Fernández de la Puente
4 years
New SF home!
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@ArtirKel
José Luis Ricón Fernández de la Puente
2 months
Solving aging means little if that doesn't include brain aging! Retro is going deeper into CNS territory, we just hired a Head of CNS! Reach out if brain rejuvenation is of interest! :)
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@ArtirKel
José Luis Ricón Fernández de la Puente
3 years
A better Google Scholar
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@ArtirKel
José Luis Ricón Fernández de la Puente
1 year
Notes on end-to-end biology
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@ArtirKel
José Luis Ricón Fernández de la Puente
2 years
I worked at Twitter in 2019.I have seen the codebase, processes, documentation etc.I do think the company can do with substantially fewer headcount and be the kind of thing that well managed takes on facebook and tiktok. As a twitter enjoyer, I hope @elonmusk makes that a reality
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@ArtirKel
José Luis Ricón Fernández de la Puente
1 year
One way to think about the repeated failure of AI in bio is this: The way of AI is 'design intelligent systems that can solve the problem for you'. The way of bio is 'Try everything in parallel'. They both try to push away 'first-principles thinking' (the way of the mathematician
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@ArtirKel
José Luis Ricón Fernández de la Puente
2 years
Why is partial reprogramming (Iduna, Altos, Retro, Turn, NewLimit) so interesting? (1/n)
@antonioregalado
Antonio Regalado
2 years
Altos Labs came out of stealth today with $3 billion in funding. Mission: unravel deep biology of cellular rejuvenation programming Funders: They don't disclose ((only ARCH)) Full list of the scientists that joined is here.
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@ArtirKel
José Luis Ricón Fernández de la Puente
1 year
Biology research is wild: You find a really impactful paper that has tried [a thing] and it is not rare that that paper, even if published a few years ago, is the only time mankind has ever tried that particular thing (At least publicly).
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@ArtirKel
José Luis Ricón Fernández de la Puente
4 years
The key difference between a date and a zoom date
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@ArtirKel
José Luis Ricón Fernández de la Puente
3 years
I've heard various people calling for more optimistic sci-fi. But what are good examples of optimistic sci-fi? (Other than Star Trek). I tried searching for it and most movies didn't seem particularly optimistic. Tomorrowland is probably the closest. What else?
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@ArtirKel
José Luis Ricón Fernández de la Puente
4 months
@paularambles At least we got brunch
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@ArtirKel
José Luis Ricón Fernández de la Puente
1 year
Guys, this is getting out of control
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@ArtirKel
José Luis Ricón Fernández de la Puente
7 years
@nc0we The mechanism seems to be that lower income "forces" you to study majors perceived as economically useful.
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@ArtirKel
José Luis Ricón Fernández de la Puente
4 years
Using nuclear weapons to study the brain
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@ArtirKel
José Luis Ricón Fernández de la Puente
5 years
Update: is sort of operational. You can pick a paper (e.g. search in semanticscholar , take the id, paste it in my website and it gets you all relevant systematic revs or meta-analysis that cited that paper)
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@ArtirKel
José Luis Ricón Fernández de la Puente
8 months
At last, an exowomb* company. They have raised 100M or so: *Also known by their less cool name artificial wombs
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