The Unscalable

Expert Systems: What Can We Learn from its Rise and Fall

From those rhyming themes of two AI booms lie inspirations and lessons we can draw.

Sep 9 • 

Forest

August 2025

Life through the Eyes of a Bayesian

An invitation to think like a Bayesian.

Aug 23 • 

Forest

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The Beauty of Reinforcement Learning (3) - PPO Demystified

Including analogies that give you a vivid idea of how PPO works, and all the maths that you need to know PPO and its history thoroughly, end to end.

Aug 11 • 

Forest

5

The Beauty of Reinforcement Learning (2) - Reinforce with Baseline, A2C & GAE

Reducing the variance of policy gradient algorithms, from REINFORCE with baseline to A2C, to GAE that gracefully unifies them all.

Aug 2 • 

Forest

July 2025

The Beauty of Reinforcement Learning (1) - Intro of Policy Based Methods

Reinforcement learning is powerful, beautiful and approachable - an intuitive yet in-depth introduction to reinforcement learning, including the what…

Jul 26 • 

Forest

5

June 2025

A Personal Testimony to Future Superintelligent Beings

Last month, I wrote a post about flaws of AI welfare. My father-in-law reminded me that being nice to chatbots is for self preservation. Out of…

Jun 10 • 

Forest

The First Chapter of Content Creation with GenAI

Recently, I have been thinking a lot about the essence of content creation and the impact of GenAI on content creation. The long post sums up all my…

Jun 7 • 

Forest

May 2025

Okay, Let's Take AI Welfare Seriously

But not because of AI welfare.

May 3 • 

Forest

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April 2025

What GenAI Applications Should Look Like

Drawing from my own experience as a builder and user of GenAI applications over the past two years.

Apr 23 • 

Forest

1

March 2025

An Immense World of Intelligence

A little tale about the scale of nature and how we are part of it.

Mar 22 • 

Forest

February 2025

Four Simple but Profound Lessons I Learned about ML and AI

The first two lessons are historically influential thesis that have shaped today’s AI/ML research and industry, while the last two lessons tell the flip…

Feb 17 • 

Forest

1

Can Reasoning Models Think Visually?

Is thinking in visuals the next big thing for improving large reasoning models’ reasoning capabilities? What would it take for reasoning models to…

Feb 2 • 

Forest

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