keterys
First Post
If your players would really go through each person's roll and take out the parts that each person contributed based on their roll, then you might need to take a more strict view on it.
That said, I still advocate not making knowledge checks at all. Use passive results, and use the checks for when actual research is done or when their expertise must be called into question on a task, or they need to do something proactive. Ie, don't roll knowledge checks except for skill challenge type things. It even talks about doing so in the PHB and DMG, if you think your players would be resistant. There's a lot to be said for being able to prepare information ahead of time.
That said, I still advocate not making knowledge checks at all. Use passive results, and use the checks for when actual research is done or when their expertise must be called into question on a task, or they need to do something proactive. Ie, don't roll knowledge checks except for skill challenge type things. It even talks about doing so in the PHB and DMG, if you think your players would be resistant. There's a lot to be said for being able to prepare information ahead of time.