Legal definition of a priori assumption
Car Accidents Legal Terminology

a priori assumption

(ah-pree-ory) n. from Latin, an assumption that is true without further proof or need to prove it. It is assumed the sun will come up tomorrow. However, it has a negative side: an a priori assumption made without question on the basis that no analysis or study is necessary, can be mental laziness when the reality is not so certain.
A-priori-assumption denotes propositional knowledge; something that comes beforehand without experience; something that is assumed to be true. The opposite is a posteriori assumption.
Source: website
From Latin, an assumption that is known without further need to prove or experience it.
Source: Wikipedia - The Free Encyclopedia. . license
An a priori assumption is an assumption formulated without prior basis in empirical fact. A priori roughly means "before experience", and is generally refers to any reasoning act which does not depend on empirical evidence or other prior experience.
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