Theo says a night of vibe coded pieces collapsing showed him engineers are still very much necessary

Context

This is an opinion post from Theo Browne, who runs T3 Code and T3 Chat and has a large YouTube following. He gave no details about what broke.

Deep dive

On October 20, Theo posted that he had one of those nights where all the vibe coded pieces collapse in front of you and you realize engineers are still very, very much necessary.

Vibe coding usually means building software by prompting AI tools and accepting what they produce without closely reading or understanding the code. Theo did not say which project failed, which tools wrote the code, or how he fixed it, so the post is a reaction rather than a report.

The post comes a day after he announced a paid course for MEGA on applying existing engineering knowledge to building with AI, which he said is aimed at full time developers and should be paid for by employers. His point that engineering skill still matters fits that pitch, though he did not mention the course here.

Theo also runs T3 Code, a tool for running coding agents such as Codex and Claude Code, and recently shared usage data showing many of its users try more than one agent. His view reflects a common one among experienced developers: AI agents can produce working pieces quickly, but people who understand the system are still needed when those pieces fail to fit together.

What to expect next

Watch whether Theo follows up with what broke and what he changed, which would make the lesson concrete. The wider debate over how far vibe coding can go will be tested as companies ship more AI written software into production. Also watch whether AI coding tools add more checks for how generated pieces fit together, the failure he describes, and whether other well known builders report similar experiences.