Know When “Enough is Enough.” So when can we be confident that we have examined enough to understand the truth of a matter? When is the evidence sufficient? Not everything that can be known about something MUST be known about it before we can make a decision about what happened in a particular event. Juries are, after all, required to be decisive. Juries are required to act (in the present) on the evidence available (from the past) to decide what ought to happen (in the future). In a similar way, those who examine the claims of the gospels can have enough evidential certainty to make a decision.