A woman explores bookshelves in a warm, inviting library filled with numerous books.

Knowing without looking

a priori knowledge claims to be knowable without experience. a posteriori knowledge leans on observation and other experiences.

A Priori vs A Posteriori: Knowing With or Without Experience

Perception relies on the senses to acquire knowledge.

What counts as “experience”?

Sensory input leads the list, with memory and introspection often included. Rational insight guides some a priori thinking without observation.

A Priori vs A Posteriori: Knowing With or Without Experience