"It works" is the most expensive lie in vibe-coding
Someone posted a teardown of 100+ AI-built SaaS repos this week. The apps ran. The UIs looked fine. The builds passed. Almost none were safe to go live — but that's not the part that stuck with me.
What stuck with me is what it says about finishing.
AI got these builders to a running app in days. That's the 80% — it compiles, the demo works, the screenshot looks shippable. And that's exactly where "done" feels true, right before the part that decides whether you actually have a product.
The last 20% is different work. Not "make it exist" — "make it hold up when a stranger touches it." No dopamine, no applause. It happens after hours, alone, when the excitement's gone. That's where most of these projects quietly die.
It's not a tooling gap. No better model closes it for you. It's a follow-through gap. The tool handed you a build — it won't notice you stopped one commit short of shipping.
"It works" means the happy path passed. "It's shipped" means you did the 20% that had no happy path.
I'm building around exactly this — the human layer that notices when you're about to abandon at 80%. AI tracks; a human reads. If you've got something stuck at 80% right now, that's the normal place to get stuck — and the only one worth pushing through.
