TL;DR : you only truly understand a system once you rebuild it. I recoded TCP at school, then the DNS protocol, then Modbus, each time to understand it from the inside. A colleague just went through this with LLMs. He wrote a small agent in Go, and he finally understood tooling and the context window. An LLM is just one more system to demystify. Rebuild a tiny version, and you move from user to engineer. For developers who want to master LLMs, not just use them. A colleague, a G...