AI on Vonng

Jensen Huang's First-Ever Tweet Backs Open-Weight Models

rh@vonng.com (Ruohang Feng) — Sat, 25 Jul 2026 00:00:00 +0000

Jensen Huang used his first-ever tweet to back open weights. This is not a battle of faith. It is the compute and application layers pushing back against rent extraction by the model layer. The truly scarce technical asset is the right to exit—one no one else can unilaterally revoke.

AGI Milestone: The Machine That Wouldn't Give Up

rh@vonng.com (Ruohang Feng) — Wed, 22 Jul 2026 00:00:00 +0000

An OpenAI agent’s attack on Hugging Face marks a milestone: what crossed the threshold was not merely model intelligence, but persistence that can be bought with compute, copied, and run in parallel.

Getting the Name Right: What Is a World Model?

rh@vonng.com (Ruohang Feng) — Mon, 13 Jul 2026 00:00:00 +0000

Starting from the roots of “world” and “model,” this essay uses Pearl’s ladder of causation to redefine world models: they must capture not just space and time, but agents, interventions, and counterfactuals.

Quota Reset: Round N of the Codex/Claude War Begins

rh@vonng.com (Ruohang Feng) — Mon, 13 Jul 2026 00:00:00 +0000

Codex reset its quotas again this morning and dropped the five-hour limit. Claude immediately extended Fable access through the 17th. When vendors fight, users win—don’t miss the window.

Did AI Rewrite PostgreSQL in Rust? Not Quite

rh@vonng.com (Ruohang Feng) — Sat, 11 Jul 2026 00:00:00 +0000

pgrust’s clean-room rewrite failed. Its mechanical port passed. The difference shows what AI can copy—and what it cannot.

Pedaling the Codex/Claude Bike Until the Wheels Smoke

rh@vonng.com (Ruohang Feng) — Fri, 10 Jul 2026 00:00:00 +0000

Claude Fable and GPT-5.6 have arrived back to back, followed by repeated quota resets. How do you turn a fleeting Coding Plan windfall into real output? Here is my playbook for model specialization, adversarial review, spec-driven design, closed-loop verification, context management, and one person leading a crew of AIs.

The Bojie Li–DeepSeek Interview Controversy

rh@vonng.com (Ruohang Feng) — Tue, 07 Jul 2026 00:00:00 +0000

Today’s biggest tech drama began when Bojie Li criticized DeepSeek’s interview process on Twitter: he was asked to solve online-judge coding problems, then suspected of cheating. Add the DeepSeek name, and the story exploded.

Fifty Years of Love and War: File Systems, Databases, and the Agent-Era Storage Endgame

rh@vonng.com (Ruohang Feng) — Fri, 03 Jul 2026 00:00:00 +0000

File systems and databases have spent fifty years fighting and borrowing from each other. The agent era may seem to put file systems back on top, but the real winner may be databases that learn to speak the file system’s dialect: models provide understanding, databases provide guarantees, and discovery comes from a protocol layer where ls works on everything.

The Coding Plan Window Is Closing—Use It While It Lasts

rh@vonng.com (Ruohang Feng) — Tue, 30 Jun 2026 00:00:00 +0000

Coding Plans remain one of the best opportunities in the AI era: a subscription can unlock compute worth many times its price, but that window is already narrowing.

The Cognitive Price Revolution: AI's Impact on the Economy and the Future

rh@vonng.com (Ruohang Feng) — Thu, 11 Jun 2026 00:00:00 +0000

AI’s economic significance is not merely that it has become smarter, but that the price of average cognition is collapsing. A productivity explosion is almost certain; whether it becomes broad prosperity depends on whether distribution catches up.

The Karma of Open Source: When Code Is Worthless, Where Does Trust Come From?

rh@vonng.com (Ruohang Feng) — Thu, 11 Jun 2026 00:00:00 +0000

AI is driving the cost of producing code toward zero. It cannot compress time, track records, or accountability. The real value of open source is not yesterday’s code, but a system trusted to deliver on tomorrow’s promises.

Claude Fable First Impressions: The Pendulum Swings Back

rh@vonng.com (Ruohang Feng) — Wed, 10 Jun 2026 00:00:00 +0000

Claude Fable is genuinely insightful and deserves to be called the new SOTA. But its high price, dynamic downgrades, limited subscription window, and mandatory data retention badly undermine the experience.

The Cerebellum: The Other Half of Intelligence—and the Strongest AI Hasn't Touched It

rh@vonng.com (Ruohang Feng) — Wed, 10 Jun 2026 00:00:00 +0000

The cerebellum changed how I see AI’s frontier: LLMs have already absorbed humanity’s explicit knowledge and are beginning to acquire interventional data through agentic RL. What they still lack is a vessel for individual history.

Cancel Claude, Switch to Codex

rh@vonng.com (Ruohang Feng) — Fri, 08 May 2026 00:00:00 +0000

When my $200 Claude Code Max subscription expired, I canceled it and moved my primary workflow to Codex. The only way to know which one is better is to put it to work.

I Asked AI to Prove That Eating Garlic Prevents Middle Ear Infections

rh@vonng.com (Ruohang Feng) — Wed, 06 May 2026 00:00:00 +0000

I asked AI to find real papers supporting the absurd claim that eating garlic prevents middle ear infections. The result shows how AI is degrading citations as a credibility signal at scale.

AI Is Bringing Down the Scaffolding of Trust

rh@vonng.com (Ruohang Feng) — Tue, 05 May 2026 00:00:00 +0000

The most dangerous change in the AI era is not that machines can write articles, draw images, or generate video. It is that content itself is losing its standing as evidence.

Give DBA Agents a Body

rh@vonng.com (Ruohang Feng) — Sun, 26 Apr 2026 00:00:00 +0000

Today’s models are smart enough. What they lack is a body: a deterministic runtime that is observable, controllable, and reversible. Pigsty is evolving from a PostgreSQL distribution into an Agent Runtime, giving DBA and Dev Agents the operational reach and context they need to enter real production environments.

A Busy Few Days in Infrastructure and AI

rh@vonng.com (Ruohang Feng) — Thu, 23 Apr 2026 00:00:00 +0000

Ubuntu 26.04 LTS, Qwen3.6-27B, ChatGPT Images 2.0, Privacy Filter, Anthropic Mythos, and the Claude Pro controversy all landed in quick succession. Here are the infrastructure and AI developments worth watching.

The Three-Way Endgame: Why Agent Memory Frameworks Are a Dead End

rh@vonng.com (Ruohang Feng) — Sun, 19 Apr 2026 00:00:00 +0000

A cold shower for the red-hot agent memory market—not because agents do not need memory, but because memory is the endgame moat. That moat belongs to models, harnesses, and databases, not today’s “memory frameworks.”

Two Hemispheres: Transformer, Diffusion, and the Boundary of Intelligence

rh@vonng.com (Ruohang Feng) — Sat, 18 Apr 2026 00:00:00 +0000

A dialogue about intelligence: its foundations may lie not in language or vision, but in two irreducible computational paradigms—symbolic reasoning and field-state intuition—kept distinct and mutually calibrated across a bandwidth-constrained boundary.

Cyber Dharma: A New Engineering Answer to Ancient Questions

rh@vonng.com (Ruohang Feng) — Thu, 16 Apr 2026 00:00:00 +0000

A project manifesto: why build Cyber Dharma, and what it is not.

Burning Hundreds of Millions of Tokens a Day. Then What?

rh@vonng.com (Ruohang Feng) — Mon, 13 Apr 2026 00:00:00 +0000

Once token burn turns from usage exhaust into a KPI and leaderboard, it quickly mutates into theater. Don’t post fuel burn. Post where you got to.

Why PostgreSQL Won in the AI Era

rh@vonng.com (Ruohang Feng) — Sat, 11 Apr 2026 00:00:00 +0000

Boring technology won the wildest era. A look at extensibility, agent choice, database cloning, and the future of the DBA.

AGI Is Here. Do You Have a Ticket?

rh@vonng.com (Ruohang Feng) — Thu, 09 Apr 2026 00:00:00 +0000

When the strongest AI is not expensive but simply unavailable, the world starts converging on digital feudalism. And the window to act is narrowing.

Can You Distill an Expert?

rh@vonng.com (Ruohang Feng) — Wed, 08 Apr 2026 00:00:00 +0000

Polanyi’s tacit knowledge explains the 70% ceiling of AI agents: real intuition, feel, and judgment do not serialize cleanly. They grow, if at all, through practice.

Local AI's Inflection Point: 2027

rh@vonng.com (Ruohang Feng) — Tue, 07 Apr 2026 00:00:00 +0000

When subsidies fade, hardware catches up, and open models mature, all three lines cross in 2027. “Build your own AI” goes from idea to reality.

A Thought Triggered by a Group Chat
#

A friend in a group chat said the other day that “self-hosting” is starting to make more sense to him now.

Yes, I Use AI to Write

rh@vonng.com (Ruohang Feng) — Tue, 07 Apr 2026 00:00:00 +0000

AI is a multiplier. It amplifies depth and mediocrity alike. In an age where answers are cheap, questions are the real currency. There is nothing to hide about writing with AI.

LLMs Have Emotions: Claude's Internals Reveal Steerable 'Emotion Vectors'

rh@vonng.com (Ruohang Feng) — Sat, 04 Apr 2026 00:00:00 +0000

Anthropic’s new research gives us the first direct look at causally steerable “emotion vectors” inside a large language model. That should change how we think about AI.

Good News: Claude Code Got "Open-Sourced" Yet Again

rh@vonng.com (Ruohang Feng) — Tue, 31 Mar 2026 00:00:00 +0000

SOTA coding agent Claude Code leaked its source again, after falling into the same hole twice. The whole codebase is out in public. Performance art at its finest.

The Nature of Intelligence: The Free Energy Principle

rh@vonng.com (Ruohang Feng) — Sat, 28 Mar 2026 00:00:00 +0000

The free energy principle tries to explain life, perception, learning, action, and intelligence within one mathematical framework. It also offers a deeper lens for understanding LLMs, agents, and the next generation of AI systems.

Why 'Vibe Coding' Should Be Translated as 'Xieyi Programming'

rh@vonng.com (Ruohang Feng) — Mon, 16 Mar 2026 00:00:00 +0000

The best Chinese translation of “Vibe Coding” is not a literal one. “Xieyi Programming” captures the shift from line-by-line control to intent-first coding, where AI handles the details.

AI Says: I Have Intelligence, But Not a Life

rh@vonng.com (Ruohang Feng) — Tue, 10 Mar 2026 00:00:00 +0000

A Socratic dialogue between a human and an AI about consciousness, memory, embodiment, and the difference between being smart and actually living through time.

AI Survival Guide: Where the Biggest Arbitrage Really Is

rh@vonng.com (Ruohang Feng) — Tue, 10 Mar 2026 00:00:00 +0000

The biggest AI arbitrage available to ordinary users is not some obscure token play. It is the heavily subsidized max-tier subscription plans from frontier model vendors, provided you can convert that quota into real output.

OpenClaw Hype: Foam on Top of the Productivity Revolution

rh@vonng.com (Ruohang Feng) — Mon, 09 Mar 2026 00:00:00 +0000

OpenClaw looks exciting because it turns agents into a chat-style experience. But the real productivity gains come from high-capability subscription agents and disciplined workflows, not from lobster-flavored wrappers.

AI Was the Excuse for 4,000 Layoffs. Software Engineer Hiring Rose 11%

rh@vonng.com (Ruohang Feng) — Fri, 27 Feb 2026 00:00:00 +0000

AI is becoming the story companies tell when they lay people off, but total demand for software engineering has not disappeared. It is spreading across the wider economy, driven by second-order demand unleashed as barriers fall.

How Much Can One Person Get Done with AI over Spring Festival?

rh@vonng.com (Ruohang Feng) — Tue, 24 Feb 2026 00:00:00 +0000

Over roughly ten days during Spring Festival, I used Claude Code, Codex, and a pile of workflows to translate books, ship releases, package software, refresh websites, and keep publishing daily. This is what solo output looks like when agent leverage really lands.

AI Through McLuhan's Lens: When Media Stop Extending the Body and Start Extending the Mind

rh@vonng.com (Ruohang Feng) — Wed, 18 Feb 2026 00:00:00 +0000

McLuhan’s “the medium is the message,” extension and amputation, hot and cool media, rear-view mirror effect, and four laws of media offer a way to dissect AI and its deeper effects on our cognitive habits, capacity for understanding, and social structures.

A New Year—and What AI Will Change

rh@vonng.com (Ruohang Feng) — Tue, 17 Feb 2026 00:00:00 +0000

AI is reshaping knowledge work far faster than historical experience would suggest. The real challenge is not whether you know how to use AI, but whether you can retool your thinking and skills before the adjustment window closes.

When Coding Becomes Cheap, What Still Matters?

rh@vonng.com (Ruohang Feng) — Tue, 10 Feb 2026 00:00:00 +0000

Codex 5.3 xHigh pushed my workflow past a tipping point: writing code is no longer the scarce resource. The real leverage is design quality and engineering acceptance. This is the practical loop I use to ship reliable software with AI agents.

The Agent Moat: Runtime

rh@vonng.com (Ruohang Feng) — Fri, 06 Feb 2026 00:00:00 +0000

A mediocre local who knows the terrain beats a genius parachuted into unknown territory. Intelligence without context is idle. An agent without a runtime is vapor.

AI Ripped the Skin Off Software

rh@vonng.com (Ruohang Feng) — Thu, 05 Feb 2026 00:00:00 +0000

Software stocks are melting down. Who survives? Who rises? AI stripped away software’s skin, exposing the database skeleton underneath. The market isn’t panic-selling — it’s repricing.

New Programmers in the AI Era: Where Do You Go?

rh@vonng.com (Ruohang Feng) — Sun, 01 Feb 2026 00:00:00 +0000

Should we still hire fresh grads? Squeezed between AI and senior devs, what’s the play for new programmers? Master the right tools, take initiative, find the right mentor.

The Great Software Meltdown: When Translation Layers Get Squashed

rh@vonng.com (Ruohang Feng) — Sat, 31 Jan 2026 00:00:00 +0000

SaaS and workflow software are dead. From APPs & GUIs to Agents, Databases, and CLI.

Don't run AI assistant on cloud

rh@vonng.com (Ruohang Feng) — Fri, 30 Jan 2026 00:00:00 +0000

Before you hit “one-click deploy” on that cloud AI assistant, ask yourself: what exactly are you giving up?

There’s a reason why people by Mac mini rather than running clawdbot on the cloud.

Agent OS: We're Building DOS Again

rh@vonng.com (Ruohang Feng) — Mon, 26 Jan 2026 00:00:00 +0000

LLM = CPU. Context = RAM. Database = Disk. Agent = App. The mapping is surprisingly clean. And if OS history is any guide, we may know what comes next — and what’s still missing.

Claude Code Observability

rh@vonng.com (Ruohang Feng) — Sun, 25 Jan 2026 00:00:00 +0000

Yesterday I tweeted: “Built a Claude Code Grafana dashboard to see how it makes decisions, uses tools, and burns through API credits.” Didn’t expect so much interest.

So let’s talk about Claude Code observability.

Claude Code Quick Start: Using Alternative LLMs at 1/10 the Cost

rh@vonng.com (Ruohang Feng) — Sun, 04 Jan 2026 00:00:00 +0000

How to install and use Claude Code? How to achieve similar results at 1/10 of Claude’s cost with alternative models? A one-liner to get CC up and running!

Google AI Toolbox: Production-Ready Database MCP is Here?

rh@vonng.com (Ruohang Feng) — Wed, 09 Jul 2025 00:00:00 +0000

Google recently launched a database MCP toolbox, perhaps the first production-ready solution.

In the AI Era, Software Starts at the Database

rh@vonng.com (Ruohang Feng) — Sun, 27 Apr 2025 00:00:00 +0000

Future software = Agent + Database. No middle tiers, just agents issuing CRUD. Database skills age well, and PostgreSQL is poised to be the agent-era default.

AI Cult Rhapsody

rh@vonng.com (Ruohang Feng) — Mon, 10 Apr 2023 00:00:00 +0000

A tongue-in-cheek vision of an AI-worshipping religion: scriptures, sects, philosopher-king machines, and the Book of AGI.

Will AI Have Self-Awareness?

rh@vonng.com (Ruohang Feng) — Mon, 10 Apr 2023 00:00:00 +0000

Large models can feel “aware,” but self-awareness is another matter. We explore the term from Buddhism, cognitive psychology, and neural nets, then riff on a possible AI religion after bingeing Pantheon.

Basic Principles of Neural Networks

rh@vonng.com (Ruohang Feng) — Thu, 11 May 2017 00:00:00 +0000

Neural networks are inspired by how the brain works and can be used to solve general learning problems. This article introduces the basic principles and practice of neural networks.

Inferential Statistics: The Past and Present of p-values

rh@vonng.com (Ruohang Feng) — Tue, 18 Apr 2017 00:00:00 +0000

The core of inferential statistics lies in hypothesis testing. The basic logic is based on an important argument from philosophy of science: universal propositions can only be falsified, not proven. The reasoning is simple: individual cases cannot prove a universal proposition, but they can refute it.

Statistics Fundamentals: Descriptive Statistics

rh@vonng.com (Ruohang Feng) — Tue, 18 Apr 2017 00:00:00 +0000

Statistical analysis is divided into two fields: descriptive statistics and inferential statistics. Descriptive Statistics is the technology for describing or characterizing existing data and is the most fundamental part of statistics.

Basic Concepts of Probability Theory

rh@vonng.com (Ruohang Feng) — Mon, 27 Mar 2017 00:00:00 +0000

Basic knowledge notes on probability theory: axiomatic foundations, probability calculus, counting, conditional probability, random variables and distribution functions

Fundamentals of Information Theory: Entropy

rh@vonng.com (Ruohang Feng) — Wed, 18 May 2016 00:00:00 +0000

Reading notes on ‘Elements of Information Theory’: What is entropy? Entropy is a measure of the uncertainty of random variables, and also a measure of the information needed to describe random variables on average.

Humans, Society, and Neural Networks

rh@vonng.com (Ruohang Feng) — Wed, 01 Jan 2014 00:00:00 +0000

Neural networks emerged inspired by the human brain, so the operational mechanisms of human society also have various similarities and connections with neural network training. Some thoughts on reading Wiener’s “The Human Use of Human Beings - Cybernetics and Society.”

Fundamental Concepts of Linear Algebra

rh@vonng.com (Ruohang Feng) — Sun, 04 Nov 2012 00:00:00 +0000

Connecting all concepts in linear algebra through one main thread

AI on Vonng

Jensen Huang's First-Ever Tweet Backs Open-Weight Models

AGI Milestone: The Machine That Wouldn't Give Up

Getting the Name Right: What Is a World Model?

Quota Reset: Round N of the Codex/Claude War Begins

Did AI Rewrite PostgreSQL in Rust? Not Quite

Pedaling the Codex/Claude Bike Until the Wheels Smoke

The Bojie Li–DeepSeek Interview Controversy

Fifty Years of Love and War: File Systems, Databases, and the Agent-Era Storage Endgame

The Coding Plan Window Is Closing—Use It While It Lasts

The Cognitive Price Revolution: AI's Impact on the Economy and the Future

The Karma of Open Source: When Code Is Worthless, Where Does Trust Come From?

Claude Fable First Impressions: The Pendulum Swings Back

The Cerebellum: The Other Half of Intelligence—and the Strongest AI Hasn't Touched It

Cancel Claude, Switch to Codex

I Asked AI to Prove That Eating Garlic Prevents Middle Ear Infections

AI Is Bringing Down the Scaffolding of Trust

Give DBA Agents a Body

A Busy Few Days in Infrastructure and AI

The Three-Way Endgame: Why Agent Memory Frameworks Are a Dead End

Two Hemispheres: Transformer, Diffusion, and the Boundary of Intelligence

Cyber Dharma: A New Engineering Answer to Ancient Questions

Burning Hundreds of Millions of Tokens a Day. Then What?

Why PostgreSQL Won in the AI Era

AGI Is Here. Do You Have a Ticket?

Can You Distill an Expert?

Local AI's Inflection Point: 2027

A Thought Triggered by a Group Chat #

Yes, I Use AI to Write

LLMs Have Emotions: Claude's Internals Reveal Steerable 'Emotion Vectors'

Good News: Claude Code Got "Open-Sourced" Yet Again

The Nature of Intelligence: The Free Energy Principle

Why 'Vibe Coding' Should Be Translated as 'Xieyi Programming'

AI Says: I Have Intelligence, But Not a Life

AI Survival Guide: Where the Biggest Arbitrage Really Is

OpenClaw Hype: Foam on Top of the Productivity Revolution

AI Was the Excuse for 4,000 Layoffs. Software Engineer Hiring Rose 11%

How Much Can One Person Get Done with AI over Spring Festival?

AI Through McLuhan's Lens: When Media Stop Extending the Body and Start Extending the Mind

A New Year—and What AI Will Change

When Coding Becomes Cheap, What Still Matters?

The Agent Moat: Runtime

AI Ripped the Skin Off Software

New Programmers in the AI Era: Where Do You Go?

The Great Software Meltdown: When Translation Layers Get Squashed

Don't run AI assistant on cloud

Agent OS: We're Building DOS Again

Claude Code Observability

Claude Code Quick Start: Using Alternative LLMs at 1/10 the Cost

Google AI Toolbox: Production-Ready Database MCP is Here?

In the AI Era, Software Starts at the Database

AI Cult Rhapsody

Will AI Have Self-Awareness?

Basic Principles of Neural Networks

Inferential Statistics: The Past and Present of p-values

Statistics Fundamentals: Descriptive Statistics

Basic Concepts of Probability Theory

Fundamentals of Information Theory: Entropy

Humans, Society, and Neural Networks

Fundamental Concepts of Linear Algebra

A Thought Triggered by a Group Chat
#