If we were simply minds designed to assess truth, life would be easy. We could simply test and adopt the evidential heuristics and algorithms that provide the most predictive successes, apply these tools to the evidence for and against a given proposition, then simply assign a probability to the truthfulness of that proposition. There would be no default position of belief or disbelief. There would be no bivalent conclusion of belief or disbelief. Everything would be comfortably a matter of epistemological probabilities that had no bearing on our survival.
However, we find ourselves active agents in a world in which we are driven to survive and secure happiness for ourselves and those we love. We find ourselves emotional beings that are very much disturbed by uncertainty. We are driven to “know”.
This drive to “know” is what pulls us away from proper probabilistic positions on the truthfulness of claims, and compels us to claim “knowledge” that a proposition is either true or untrue. While this bivalent approach to truth destroys our credibility as effective assessors of epistemological probabilities, it is nonetheless fully human.
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This post is an elaboration of #2 from a list of
The interview of Tom Clark by