Welcome to your engineering notebook

← all notebook entries

This is your notebook — your record of becoming an engineer. It is not a school exercise book, and nobody marks it.

What belongs in here

Everything real about the work belongs here:

• Mistakes. A wrong assumption you fixed is worth more than code that happened to work the first time. Write down what broke and how you worked it out.
• Unfinished ideas. Half-formed thoughts and "I wonder if..." belong here. You are not promising to build them — you're keeping them.
• Diagrams and questions. A sketch of how the parts connect, or a good question you couldn't answer yet, is as valuable as any code.

You are not judged by how much code you write. A small change you fully understand beats a large one you don't.

How the apprenticeship works

• You choose what to build. The projects are yours.
• Charles and ChatGPT help you discover how. They guide, mentor and review — they don't hand you the answer.
• AI is a tool, like a compiler. It may help you generate or debug code, but you stay responsible for understanding the intent, the architecture and the result. If you can't explain it, it isn't finished.

How to add an entry

From the project folder on your VM:

./new-entry "How a browser finds my page"
nano content/notebook/2026-07-11-how-a-browser-finds-my-page.md
./build

Then open https://emily.charliehub.net/notebook — your new entry appears at the top.

A first question to carry with you

"How does this system work?"

When you can answer that for something you built — and teach it to someone else — you've mastered it. That's what the progress tracker is for.

Welcome. Let's build.