Investigate the uncertainty that matters to this decision. Use relevant sources, preserve material evidence, consider a credible contrary explanation, and explain what could not be established. Stop when the scoped question can be answered usefully or an access/knowledge limit is clear.
Focused
There is one thing you actually need settled before deciding. Your AI investigates that, keeps what it used, and says what it could not establish.
Tools it leans on
Your AI is refused by name if you have not allowed one of these, and can tell you which permission is missing.