| Credibility level | An information source can have no more than one version with this level of credibility at any given time | Objective control data is required | The actor's decision must match the actor's priorities |
|---|---|---|---|
 Proven | Yes | Yes | No. The actor's priority list is updated according to the decision if there is objective data about the actor's decision |
 Likely | Yes | No | Yes |
 Possible | No | No | Yes |
 Unknown | No | No | No |
 Unlikely | No | No | No. The actor's supposed decision must conflict with the actor's priorities |
 Impossible | No | Yes | No. The actor's supposed decision must conflict with the actor's priorities |
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