The court has sometimes been used as a way of getting information that is otherwise unavailable, by cross-examining officials or calling for documents. This approach was successfully used in the McLibel case against McDonalds in the UK.
However this can be time consuming and expensive, so it’s useful to consider other ways of accessing information (eg, Freedom of Information, etc).
Court can also be a way of getting alternative information into court and onto the public record, particularly if good media is used.
It may be possible to call for documents or witnesses dealing with the subject of the original action or to read them into the court record yourself. For example, in explaining why they felt they had to trespass at Nurrungar, some activists spoke in court about the functions of the base and its role in US war fighting strategies.
Also see Freedom of information