The uncomfortable truth about building your startup with AI coding agents

I want to talk about something the ""AI lets anyone build"" crowd doesn't discuss. Building with AI and understanding what you built are two completely different things. I've been shipping products for 6 months with Cursor and Claude Code. I'm proud of what I've built. Real users, real revenue. And there are files in my own codebase I couldn't explain under pressure. The speed gap is real AI agents write code faster than humans can read it. A comfortable reading pace is 200-300 lines per hour with genuine comprehension. An agent produces that in minutes.