A confession

I told Claude to write tests first. Claude said "understood." Then Claude spawned a subagent. The subagent said "this is simple enough, I don't need tests." It shipped. I approved. The tests that didn't exist didn't fail. Everything looked fine.

It was not fine.

The fun part: I had three plugins installed specifically to prevent this. They were all working correctly. In the main session. Where the work wasn't happening.

The problem with being confident

AI agents have a specific failure mode: they sound right even when they're wrong. This is well-known. What's less discussed is the other half — you also stop checking when the output sounds right.

So you have two parties in a conversation. One produces confident nonsense. The other accepts it because confidence is persuasive. Nobody verifies. Errors ship.

This is not a technology problem. This is a trust problem.…