The Difference Between Being Mistaken and Being Epistemically Inconsistent
A person can be wrong while reasoning in good faith, or correct while reasoning badly; the model keeps these cases separate.
Mistakes Are Not Always Irrational
A person is mistaken when their belief does not match reality. But a mistake is not automatically a rational failure. If the available evidence was misleading, if the base rates were unknown, or if the agent reasonably trusted a source that later turned out to be wrong, the agent may have been epistemically responsible even while false.
This is why the model does not equate truth with rationality. Rationality concerns the relationship between evidence, perception, and assigned confidence.
Epistemic Inconsistency
Epistemic inconsistency occurs when assigned credence does not match perceived evidence. The agent need not be omniscient. The key question is internal: given what the agent actually takes the evidence to show, do they assign a confidence that follows from it?
Someone can be epistemically inconsistent while accidentally correct. They may believe a true claim for bad reasons, or assign certainty where their own evidence supports only a cautious lean. Luck does not make the credencing process healthy.
Why This Distinction Matters Diagnostically
Without this distinction, we misjudge people. We treat sincere error as dishonesty, or we excuse motivated belief because the conclusion happens to be popular or true. The model encourages a more careful posture: ask what evidence was available, how the person perceived it, and whether their final confidence honored that perception.
This is especially important in public debate. A community that cannot distinguish error from bad faith will punish learning and reward performance.
How the Interactive Model Shows It
In the lab, a gap between Objective Evidence (E0) and Perceived Evidence (EP) represents error in perception or processing. A gap between Perceived Evidence (EP) and Assigned Credence (CA) represents core irrationality: the doxastic gap. The first may be innocent, negligent, or unavoidable depending on context. The second points more directly to integrity, pressure, fear, or identity.