ENTERPRISE CODE · TIER 1, MODULE 01 — UNDERSTANDING A CODEBASE · ec-01 How AI Reads Software

A million lines, one small window

An AI can't hold an entire enterprise codebase in its head at once — every answer it gives depends entirely on which small slice of the codebase it was actually shown. Drag the spotlight and watch how much of "Meridian" is actually visible at once.

api-gateway order-service inventory-service auth-lib

6 of 48 files fit in the current context window —

How it works

Every answer is scoped to what's actually shown

thousands of files, real enterprise scale
The whole codebaseFar more than any single request could ever include.
only a handful actually get included
What actually gets sentA small, chosen slice — the rest doesn't exist as far as this request is concerned.
the answer shaped entirely by that one slice
The answer's real scopeRight for the files it saw — silent about everything it didn't.

So what

"The AI didn't know about that file" isn't a bug report — it's a description of the context window doing exactly what it does.