The appearance is therefore a mental object, a sense datum.
2.
In one sense this is ridiculous, since there is nothing red in a brain to act as a sense datum.
3.
It follows that the sense datum is not " what " is known but is an active way of " knowing " the world.
4.
Moreover, the sense datum " per se " is an abstraction rather than a substantial entity, though sensing ( conceived as an act ) is very real.
5.
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.
6.
This elliptical'appearance'cannot be identical with the coin ( for the coin is perfectly round ), and is therefore a sense datum, which somehow represents the round coin to us.
7.
When we see, he argued, we are not seeing an image or sense datum in the mind : we are seeing the world, albeit not in the direct fashion imagined by the na�ve realist.
8.
Artists who have used the SH-101 in their music include les Rythmes digitales, Sense Datum, Squarepusher, Sascha Konietzko of KMFDM, Freddy Fresh, Lab-4, Nitzer Ebb, the Chemical Brothers, Boards of Canada, the Moog, and others.
9.
These arguments lean towards the " nurture " side of the argument : that language is acquired through sensory experience, which led to Rudolf Carnap's Aufbau, an attempt to learn all knowledge from sense datum, using the notion of " remembered as similar " to bind them into clusters, which would eventually map into language.