Summary |
Beliefs are often based on assertions by others: that is, on testimony. This phenomenon raises many questions. How wide is the range of testimony-based beliefs? Do all assertions play the same epistemic role, or
do some assertive speech acts play special roles? Can mathematical, moral, religious, or aesthetic knowledge be
transferred? A major issue in the epistemology of testimony concerns the rational role of testimony. How
does comprehending an assertion rationally support a belief? According to reductionism,
it provides no support; comprehension is rationally inert. The recipient must
have independent rational grounds to believe the assertion. Anti-reductionism
disagrees: comprehension provides prima facie, defeasible rational
support. Reductionism is accused of being too demanding, anti-reductionism of
being too permissive. Another issue concerns the transmission of knowledge. Is
knowledge transferred from sender to receiver? Is knowledge in the chain of
sources essential for the uptake of knowledge, or can assertive communication
sometimes generate knowledge?
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