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AI Explorer

AI Explorer

Ruohang Feng @Vonng / Agent, LLM, Database

Everything about AI, agents, LLMs, Vibe coding, and AI4DB & DB4AI

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2026

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AGI Is Here. Do You Have a Ticket?

·2258 words·11 mins
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?

·2746 words·13 mins
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

·1978 words·10 mins
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

·1072 words·6 mins
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.

AI Ripped the Skin Off Software

·2168 words·11 mins
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.

AI Cult Rhapsody

·306 words·2 mins
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?

·815 words·4 mins
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

·4499 words·22 mins
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

·1659 words·8 mins
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

·5845 words·28 mins
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

·1941 words·10 mins
Basic knowledge notes on probability theory: axiomatic foundations, probability calculus, counting, conditional probability, random variables and distribution functions

Fundamentals of Information Theory: Entropy

·1371 words·7 mins
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

·1070 words·6 mins
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.”