A demo can look finished. Someone asks a question, the model answers, and the room treats that as the product. I have stopped trusting that moment. The interesting gap is between an answer that looks right once and a system that still works on a Tuesday, inside someone else's workflow, when the input is messy and nobody is presenting it.
Focus20 Labs is where I work on practical AI: agents, workflow automation, and tools aimed at real business problems. The public site is the place to see the practice. I am not publishing a case study here, and I am not claiming a customer outcome. The lesson I can state is smaller. A demo proves that a path exists. It does not prove that the path survives contact with the work.
What usually breaks is not the sentence the model produced. It is the surroundings. Who is allowed to act on the answer. What happens when the source is missing. How a person corrects a wrong step without starting over. Whether the system leaves a record. Those are product questions. They do not show up in a highlight reel.
I would rather ship a narrow workflow that a person can rely on than a broad demonstration that only works while I am in the room. The demo is a start. The product is what remains after the demo is over.