Arjun Narayan

After waltzing through four coalitions I didn't think the dictator would have his comeuppance in Spain...

yes, this is exactly the rabbithole (blackhole?) i needed to go down with my friday night, try to understand general relativity, a quest that i had successfully punted for two decades, thanks dwarkesh

@TheStalwart its because guitar is not a serious instrument (when it comes to rigorous pedagogy) and cargo cults off the bowed string instruments - where bowing IS more technically complex and requires the dominant hand.

One thing that is NOT intuitive to me at all, is that right handed guitarists do their most technically complex work with their left hand, while the right hand can often get away with just really repetitive strums, whose only job is to stay on beat.

@lymanstoneky thats what the astrophage is for. its a dark forest decoy to dim all the stars to prevent getting hunter-killed. so you astrophase all the stars in the galaxy while you build your dyson sphere.

If you believe the possibility that the Great Filter is basically a genocidal hunter-killer galactic species, the obvious "signal" to them to kill you off is not radio signals Radio isn't a danger It's solar dimming caused by Dyson-type investments.

1/ Last week at @aiDotEngineer, I presented the 2026 AI Engineering Survey: 1,000+ AI engineers on model selection, build vs. buy, who’s shipping with AI, and (of course) whether GPUs are going to space. This year, we ran it with @NotionHQ and @vercel. Some highlights 🧵

A PhD is when your supervisor gradually becomes convinced that you know what you’re doing, and you gradually become convinced that neither of you does.

After that penalty I'm so glad Neymar lost and that Brazil's draught came exactly for the span of his career.

@rorysutherland The Antidosis establishes this as the process for property valuation in classical Athens at least as far back as 352 BC, we do not have to credit the Danes for any innovation

This is my incredibly easy solution to property valuation, borrowed from the Danish monarchy in the Middle Ages.

@vanlightly Correctness. What they want is a way to reason about "the data" as a single logical thing

What's with the obsession with "a single copy" of the data? With LTAP, it might store one durable copy of the data (WAL keepers + Parquet on S3), but pageservers also maintain a copy. Sure, its cached, but it's still a copy. I don't want to think about the cost of serving a Postgres read from Parquet. You can size the Postgres instance keep more data locally, to avoid a local cache miss, so then you have another cached copy. Plus, "single copy" but with time travel? There are in fact multiple copies of the data to service time travel. Also, CDC? The change feed is a copy. Copies are everywhere!

@charliermarsh why dont they make the whole gpu out of sram

Why don’t they make the whole database out of indexes

If you think expending energy to keep a room tolerably warm and expending energy to keep a room tolerably cool belong in different moral categories, you are just privileging as normative the climate of the place you lived when you were 10

every person that is anti-AC for climate change reasons should also give up their heater. heating contributes 4x the emissions that cooling does. if you are cold you should simply wear more clothing. this will save the earth and prove that you are Good and Moral.

I’m excited to announce our $40M Series B, led by @AmplifyPartners with @kleinerperkins, and @Theoryvc. After knowing each other for 10 years and meeting in our freshman year in college, Cheng Han and I came together in 2021 to solve the massive problem with blockchains - the data was fragmented across hundreds of chains and unusable at scale. Today, we manage 30+ petabytes of blockchain data that serves as the onchain system of record for institutions like Visa, BCG, and major banks and asset managers. A lot has changed since our Series A two years ago: → Revenue grew 10x → 150+ enterprise customers → Visa and BCG built their stablecoin dashboards on Allium → Data cited by research institutions from the Fed to Stanford Since we founded Allium 5 years ago, blockchain went from retail speculation to institutional infrastructure for 24/7 settlement, programmable payments, and tokenized assets that trade like equities. Allium went from 3 people in a room to the data layer leading institutions trust to operate onchain. Thank you to our customers, investors, and especially the Allium team for helping us reach this milestone. It's been an incredible journey so far, and we're excited to continue building the system of record for onchain finance. A special thank you to @dbeyer123 from Amplify who’s joining our board, @ttunguz @SpencerFarrar @LM_Braswell and everyone who believed in us from the beginning. And thank you to @bdanweiss and @FortuneMagazine for covering the news! Read more about our announcement:

finally sharing what i've been up to! left phd end of 2025 and co-founded Engram. there are a few startups in SF right making very different bets on the right way to train AI models. this is ours: people want models that learn over time, remember details, adapt and interact like a person would everyone gets a model. your model updates ~every minute. this is the world we're building. :)

PSA: when you wake up, reach for your phone immediately. Do NOT scroll Instagram reels. Send a good morning message. Not to your girlfriend, to Claude. That way, you can start the clock for your 5 hour Claude Code usage limit while you freshen up and head to the office. At noon, the 5 hour window would have passed and the usage limit would reset. Then you can generate more shareholder value.

@largedatabank well they just renewed my wifes real id into a non real id so no. two minutes hate time.

mostly the DMV gets a lot of hate because it's slow but I'm sitting here impressed at the system of handoffs and queues that reliably process thousands of people per day through a complex and messy human process

@steveonomics rent 10 grand * 12 months / 30% rent fraction of income / 4% fire endowment safe withdrawal rate = 10 million is the equation the entire city runs on

It’s astounding to me that every San Francisco tech bro feels they need $10 million to escape the permanent underclass when their only hobbies are buying hoodies and going on hikes.

We at @AmplifyPartners are launching a writing fellowship. It's for technical people (devs, researchers, etc.) with a focus area who want 2-3 months, some money, and my editing to research + write. Help us fight back against the onslaught of slop and dumb attention-maxxing.

how are they not called "merry men", reopen the schools

@BeenThereCap @matt_levine This is a callback to the 2020 Revlon/Citi accidental $900 million wire which he covered at length because of the fascinating caselaw that resulted from it. npr.org/transcripts/10…

OMG, what did Citibank due to @matt_levine over the weekend to make him mad? This is hilariously brutal. Enjoy. Although you kind-of need to have read his accounts of the Citibank screw-ups over the years to fully appreciate the build-up to this capstone literary event.