sense datum การใช้

The appearance is therefore a mental object, a sense datum.
In one sense this is ridiculous, since there is nothing red in a brain to act as a sense datum.
It follows that the sense datum is not " what " is known but is an active way of " knowing " the world.
Moreover, the sense datum " per se " is an abstraction rather than a substantial entity, though sensing ( conceived as an act ) is very real.
A . J . Ayer criticizes what he characterizes as Merleau-Ponty's arguments against the sense datum theory of perception, finding them inconclusive and open to several different objections.