In general, when a body of evidence is interpreted by Gister-CL relative to a propositional statement of
interest, the result is an evidential interval.
An evidential interval is a subinterval of [0, 100]%. The lower bound,
called the support or belief, indicates
the degree to which the evidence supports the propositional statement in
question, while the upper bound, called the plausibility,
indicates the degree to which the evidence fails to refute the proposition,
i.e., the degree to which it remains plausible. This evidential interval
typically corresponds to bounds on a probability. Thus, the lower and
upper bounds are often called the lower and upper
probabilities, respectively. Examples of how these intervals are
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