Then please tell me what exactly they prove in the episode. That he was a sentient being? No one really doubt it. Only Maddox, and he was virtually the only one in the Galaxy, and really, it wasn't even the point in the hearing. That he has certain rights as Federation Citizen? It was already decided by a panel of expert for his admission at the Academy.
This is what happened:
- The Jag says that Data is a property of Federation because Acts of Cumberland apply here
- Then she say that Acts of Cumberland don't apply here, and she doesn't explain why
No new facts came up during the hearing, absolutely nothing was proven. No one disputed that Data was artificial and intelligent, and the Acts apply to Artificial Intelligences. So what changed Jag's mind?