All relevant information needs to be gathered before deciding.

If there is inadequate or outdated information, then it is more likely that a wrong decision might be made. If there is a lot of irrelevant information, the decision will be difficult to make, and it will be easier to become distracted by unnecessary factors.

You therefore need up-to-date, accurate information on which to make decisions.

The amount of time spent on information-gathering must be weighed against how much you are willing to risk making the wrong decision. In a group situation, such as at work, it may be appropriate for different people to research different aspects of the information required. For example, different people might be allocated to concentrate their research on costs, facilities, availability, and so on.