Manas Bihani
About

the questions

  1. What is a moat in an AI world?
  2. Why do AI products converge?
  3. What becomes scarce when intelligence becomes cheap?
  4. Does distribution matter more than technology?
  5. Why might human-made things become more valuable?
  6. What happens to expertise when everyone has the same models?
  7. Which parts of an AI startup are actually defensible?
  8. Where does value move when intelligence becomes commoditized?

everything on the desk

  1. The periodic table of the AI stackVisualization
  2. What is a moat when the model isn't yours?Note
  3. The problem-selection premiumNote
  4. Same model, different wiringNote
  5. Selection is the new bottleneckNote
  6. Get friendly with the AI raceEssay
  7. The convergence taxNote
  8. The luxury of realityNote
  9. The non-technical technical advantageNote
  10. The verification economyNote
  11. The bets against the wallVisualization
  12. You can't buy your way outVisualization
  13. How a chatbot writes one wordVisualization
  14. The grid is the last wallVisualization
  15. Who got paidVisualization
  16. Why this paper mattersExplainer
  17. Transformer: Why did transformers replace RNNs?Vaswani et al., NeurIPS 2017
  18. KV cache: Why does a long conversation get slower and cost more than a short one?Shazeer, 2019
  19. Mixture of experts: Why do some AI models have experts?Fedus, Zoph and Shazeer, 2021
  20. FlashAttention: Why is attention slow when the GPU is barely doing any arithmetic?Dao et al., NeurIPS 2022
  21. Mamba: Why does a model reread the whole conversation instead of just remembering it?Gu & Dao, 2023
  22. PagedAttention: Why does a GPU with free memory still refuse new requests?Kwon et al., SOSP 2023
  23. DeepSeek: How did DeepSeek train a frontier model so cheaply?DeepSeek-AI, 2024
  24. Jamba: Why does Jamba matter?Lieber et al., AI21 Labs, 2024
  25. BitNet: Why does BitNet matter?Ma et al., Microsoft Research, 2025
  26. DeepSeek-R1: Can a small AI model learn to reason like a huge one?DeepSeek-AI, 2025
  27. Kimi K2: Why does Kimi K2 matter?Kimi Team, Moonshot AI, 2025
  28. Sliding-window attention: How do models handle huge context windows without the memory bill exploding?Gemma Team, Google DeepMind, 2025
  29. How electricity becomes intelligenceVisualization
  30. This desk, as a datasetDataset
  31. The first version of this roomNote
  32. The aura dividendNote
  33. Distribution is rented attentionNote
  34. The Convergence TestNote
  35. A shelf for thinking about cheap intelligenceCollection
  36. Anatomy of an AI startupNote
  37. Six shocks to expertiseNote
  38. Nineteen Public KeysEssay
  39. The value migration machineModel
  40. AAA-Rated GPUsEssay
  41. Moats, before and afterVisualization
  42. The rhinoceros problemNote
  43. What becomes scarce when intelligence becomes cheap?Essay
  44. AI Has Passed Every Exam. It Has Never Had an Idea.Essay
  45. What Becomes Scarce After Intelligence?Essay
  46. India’s Carbon Markets : A New Test for Global Climate PolicyEssay
  47. Google Wants AI to Become BoringEssay
  48. The Wall That Wasn’t YoursEssay
  49. The Rate-Limiting StepEssay
  50. The Speed of Being WrongEssay
  51. Uber Burned a Year of AI Budget in Four Months. A Rat Catcher in 1902 Knew WhyEssay
  52. Finding a Flat in India Is Broken. We Have the Technology to Fix It. Nobody With Power Wants To.Essay
  53. Why We Can Never Have Good Social MediaEssay
  54. Gen Z Is Going OfflineEssay

rooms

  1. Home
  2. Writing
  3. Projects
  4. Reading & Watching
  5. All the questions
  6. Everything, as a contact sheet
  7. About

Writing

Essays when I've thought something through. Notes when I haven't yet, but don't want to lose the thought.

Every piece in this series looks at one part of a machine: the chip, the memory, the heat, the grid, who got paid. This one steps back to ask why the machine is being built at all. The answer is usually called a race: a handful of companies each spending more than most countries to build the most capable AI first. That picture is right but incomplete. Building the smartest model is only the first of five races, and it is no longer the one that settles who wins. The other four are about what happens once a model exists: who can get the compute to run it, who can make it reliable enough to hand a job to, who owns the customers, and who can turn a dollar of computing into more than a dollar of work.

Strategy · Essay · 27 Sept 2026

Get friendly with the AI race

It looks like one race to build the smartest model. It is five: capability, compute, deployment, distribution and economics, with nations and safety wrapped around all of them. A plain guide to the whole machine: who is racing, what the words mean, who pays whom, and what comes after.

Read, 14 min →

Systems · Essay · 1 Sept 2026

Nineteen Public Keys

A swarm of AI agents rebuilt the internet’s communication stack in four days. They got to the last layer and hit the same wall we did.

10 min →

Strategy · Essay · 19 Aug 2026

AAA-Rated GPUs

Wall Street just agreed to insure Nvidia’s downside. Once you see the shape of the trick, you start seeing it everywhere else too.

5 min →

Theses · Essay · 4 Aug 2026

What becomes scarce when intelligence becomes cheap?

Every time something becomes abundant, the value moves next door. A search for the next door.

the bottleneck always moves next door

3 min →

Systems · Essay · 1 Aug 2026

AI Has Passed Every Exam. It Has Never Had an Idea.

The machine has passed every exam we can build and discovered nothing.

9 min →

Strategy · Essay · 21 Jul 2026

What Becomes Scarce After Intelligence?

Nuclear reactors and downloadable models look like opposite strategies. They’re two sides of one wager on a question nobody will say out loud: does intelligence have a ceiling?

7 min →

Theses · Essay · 8 Jul 2026

India’s Carbon Markets : A New Test for Global Climate Policy

Part one of three on carbon credits, India’s compliance market, and where the money will actually go.

7 min →

Strategy · Essay · 4 Jul 2026

Google Wants AI to Become Boring

Why Google may be trying to make intelligence disappear.

8 min →

Strategy · Essay · 13 Jun 2026

The Wall That Wasn’t Yours

Fable 5 is Anthropic’s best model, but Friday’s letter showed why 'best' doesn’t mean valuable

7 min →

Systems · Essay · 9 Jun 2026

The Rate-Limiting Step

How AI keeps solving the wrong bottleneck

6 min →

Theses · Essay · 5 Jun 2026

The Speed of Being Wrong

Whether AI levels you up or quietly hollows you out comes down to a single variable almost no one is naming. It is not your skill.

9 min →

Strategy · Essay · 31 May 2026

Uber Burned a Year of AI Budget in Four Months. A Rat Catcher in 1902 Knew Why

Big Tech turned AI usage into a metric and a 124-year-old bounty scheme in colonial Hanoi explains exactly what happened next.

7 min →

Theses · Essay · 10 May 2026

Finding a Flat in India Is Broken. We Have the Technology to Fix It. Nobody With Power Wants To.

On fake listings, misaligned incentives, and why the right home might already be three streets away from you.

10 min →

Theses · Essay · 21 Mar 2026

Why We Can Never Have Good Social Media

How AI advertising is driving culture underground and why the places that feel authentic today are only safe until someone notices them.

5 min →

Theses · Essay · 15 Mar 2026

Gen Z Is Going Offline

What looks like a generational preference for offline socializing is a market signal about the failure of retention-based business models. Gen Z isn’t rejecting digital tools. They’re leaving platform

6 min →

notes, roughly in order

What is a moat when the model isn't yours?

Mac developers have a verb for this: to get Sherlocked. In 2002 Apple shipped Sherlock 3, which did most of what a popular third-party app called Watson did, and Watson's business went away. The platform owner looked at what was selling on top of it and built it in.

Note · 27 Sept 2026

The problem-selection premium

Richard Hamming used to ask scientists at Bell Labs what the most important problems in their field were, and then why they weren't working on them. People didn't like the question. It was a good question because working hard on the wrong problem is the most common way for smart people to waste a career.

Note · 27 Sept 2026

Same model, different wiring

When factories electrified, every one of them got the same current from the same grid. For decades productivity barely moved. The gains came only when owners stopped swapping a big motor for the old steam engine and redesigned the floor around small motors at every machine. Same power, different wiring, very different results.

Note · 27 Sept 2026

Selection is the new bottleneck

Photographers used to shoot a roll of 36 frames, print them all on one contact sheet, and circle a single one in grease pencil. The shooting was hard, but the circle was the craft. Plenty of famous photographs were chosen from a sheet of near misses.

Note · 27 Sept 2026

The convergence tax

Ask three well-run companies to use the same frontier model to answer "what should our product strategy be?" and you get three versions of one memo. Nobody did anything wrong. The inputs were the same, so the outputs regress to the same place.

Note · 27 Sept 2026

The luxury of reality

When factories made goods cheap, the handmade thing didn't disappear. It moved upmarket. William Morris and the Arts and Crafts movement made a whole aesthetic out of what machines couldn't do. A century later, "hand-stitched" is something brands print on the label.

Note · 27 Sept 2026

The non-technical technical advantage

Most value in technology gets lost in translation. An engineer knows what a capability can do. A founder, investor or operator knows what a market will pay for. Very few people can walk the whole chain without falling off:

Note · 27 Sept 2026

The verification economy

England has required silver to be tested and stamped since 1300. The stamp was tiny and it did one job: it told a stranger the metal was what it claimed to be. Once there is enough cheap imitation around, that little mark is the difference between metal and money.

Note · 27 Sept 2026

The first version of this room

The first version of this site was a weekly AI news edition. It had Renaissance paintings with object-detection boxes drawn over them, a chip that booted up on the loading screen, and a hero image that "denoised" itself like a diffusion model.

Note · 23 Sept 2026

The aura dividend

In 1935 Walter Benjamin argued that mechanical reproduction strips a work of art of its aura: its presence in one time and place. He was right about the aura and wrong about what would happen to its price. A century of perfect copies has made originals more valuable, not less.

Note · 22 Sept 2026

Distribution is rented attention

When people say a startup has distribution, they usually mean it has found a cheap way to reach people through someone else's surface: a search engine, an app store, a feed, a marketplace. That is real, but it is a lease, and the landlord reads the same numbers you do.

Note · 20 Sept 2026

The Convergence Test

Biologists call it convergent evolution: unrelated lineages arriving at the same form because the environment rewards it. Haeckel's anemones are a hundred species solving the same problem the same way. The claim that AI products are converging is easy to make and hard to check. This benchmark is an attempt to check it.

Note · 17 Sept 2026

Anatomy of an AI startup

Vesalius's plate is a useful picture of a lot of AI companies: an impressive, detailed body hanging from a single rope it doesn't own. This analysis takes the body apart, layer by layer, and asks of each: could a well-funded competitor with the same model copy this within a month?

Note · 8 Sept 2026

Six shocks to expertise

A short history of expertise getting cheap, told as six moments. For each one: what became cheap, and what became valuable as a result. The pattern is consistent enough to be suspicious of, which is a good reason to write it down.

Note · 2 Sept 2026

The rhinoceros problem

In 1515 an Indian rhinoceros arrived in Lisbon. Albrecht Dürer, in Nuremberg, never saw it. He worked from a written description and a rough sketch someone sent him, and produced a woodcut so convincing that for more than two centuries it was what Europeans thought a rhinoceros looked like.

Note · 11 Aug 2026