"Don't bite my finger, look where I am pointing."

“Metaphysics of an experimental epistemologist by Heinz von Foerster, 1995”

“With all of these limitations and hazards well in mind, let us ask whether a knower so conceived is capable of constructing the physics of the world which includes himself. But, in so doing, let us be perfectly frank to admit that causality is a superstition.”

“Because of the "all-or-none" character of nervous activity, events and the relations among them can be treated by means of propositional logic. It is found that the behaviour of every net can be described in these terms, with the addition of more complicated logical means for nets containing cycles; and that for any logical expression satisfying certain conditions, one can find in net behaving ever fashion it describes.”