La Défense, Paris
“From the irreciprocity of causality it follows that even if the net be known, though we may predict future from present activities, we can deduce neither afferent from central, nor central from efferent, nor past from present activities - conclusions which are reinforced by the contradictory testimony of eye-witness, by the difficulty of diagnosing differentially the organically diseased, the hysteric and the malingerer, and by comparing one’s own memories or recollection with his contemporaneous records”
Warren McCulloch and Walter Pitts - A logical calculus of the ideas immanent in nervous activity (1943)








