Philosophy The doctrine, set forth by David Hume along with his successors, that percepts and concepts constitute the only real items of real information, with all the items of perception and nature associated with head itself staying unknowable.
The doctrine that actual things exist only as perceptual phenomena or physical stimuli
That concept which restricts positive or scientific understanding to phenomena only, whether product or religious.
The philosophical doctrine that the phenomenal and the real are identical —that phenomena are the only realities. Also called externalism.