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01 / Ideas

Ideas, in depth.

Notes on what I learn while building software.

In the collection

23 articles

Your next AI skill is worldbuilding

Build the world around the model

SigNews: Mapping global news narratives with AI

Real-time intelligence for a noisy world

Using AI

From an assistant to a new way of working.

4 chapters

The four levels of AI mastery

From assistant to programmable intelligence

Directing AI agents: From writing code to orchestrating it

From coding to orchestrating agents

Autonomous AI agents: When to delegate entire workflows

Delegating workflows to AI

When AI becomes the product: Designing AI-native systems

Blending code with AI reasoning

Cursor IDE in practice: Agent mode and intent-driven coding

AI-assisted coding with Cursor IDE

Abundant Intelligence

What changes when intelligence becomes abundant.

4 chapters

Your moat is melting: What AI does to knowledge work

What makes you valuable when AI can execute?

How to actually use AI

Direct AI like an on-demand team

The collapse of the middle: Where value goes when AI executes

Value moves to judgment and humanity

What remains when machines handle everything?

Work as expression, not survival

Application Design

Rethinking the tools we use every day.

4 chapters

Maintainable software: Building applications that last

Foundations of maintainable software

The dependency rule: Structuring code for independence

Structuring code for independence

Hexagonal architecture: Separating business from technology

Isolating business from infrastructure

Clean architecture in practice: Entities, use cases, and layers

Layered architecture for lasting code

What if we got online shopping wrong?

Reimagining e-commerce as open protocol

Building a web server with TypeScript and Koa

A lightweight TypeScript web server

Building an expert system in Python (backward chaining)

Building an inference engine in Python

X86-64 assembly basics: Writing your first functions

First steps into x86-64 assembly

Building a program that writes itself (a quine)

Code that prints its own source

Building nm and otool: Parsing Mach-O binaries in C

Reverse engineering macOS binaries in C

SHA-256 and MD5 in C: Implementing hash functions from scratch

Implementing cryptographic hash functions in C

Writing your own malloc in C: A memory allocator from scratch

Building malloc from scratch to understand memory