Matrix

"If he is inspecting a rough spot on some surface by means of touch, he moves his finger over the spot, thus creating a shower of neural impulses with definite sequential structure, from wich he can derive the static shape and other characteristics of the thing investigated. To judge the weight of an object moves across the fovea. In this sense, our initial sensory data are always 'first derivatives', statements about differences which exist among external objects or statements about changes which occur either in them or in our relationship to them" (Gregory Bateson).