The terms "black box" and "white box" are convenient and figurative expressions of not very well determined usage. I shall understand by a black box a piece of apparatus, such as four-terminal networks with two input and two output terminals, which performs a definite operation on the present and past of the input potential, but for which we do not necessarily have any information of the structure by which this operation is performed. On the other hand, a white box will be similar network in which we have built in the relation between input and output potentials in accordance with a definite structural plan for securing a previously determined input-output relation.
Norbert WienerRelated topics
apparatus black box built definite network operation output past piece plan present structural well white inputRelated quotes
The main theme of this report is a particular facet of the general problem of pre-organization in self-organizing systems, namely, the theory and circuitry of information processing networks. One may consider these networks as a special type of parallel computation channels which extract from the set of all possible inputs a particular subset which is defined by the internal structure of the network. The advantage of such operationally deterministic networks in connection with adaptive systems is the obvious reduction in channel capacity of the adaptors, if it is possible to predetermine classes of inputs which are supposed to be meaningful for those interacting with the automaton.
Heinz von Foerster
The problem which Mondrian undertook to solve in nr. 116 [a new painting of Mondrian, exhibited in a group-exhibition in the Stedelijk Museum in 1915 in Amsterdam] was handled very successfully. This work spiritually dominates all others. It gives the impression of Repose; the repose of the soul. Its predetermined structure embodies 'becoming' rather than 'being'. This represents a true element in art, for art is not 'being', but 'becoming'. The idea of 'becoming' has been expressed in black and white.... Through years of hard work my own experiences have led me, before I came to know the theories of Uexkuell or Picasso, to prefer the use of the white-black-grey palette in works of a purely spiritual content...
Theo van Doesburg
A group may have more group information or less group information than its members. A group of non-social animals, temporarily assembled, contains very little group information, even though its members may possess much information as individuals. This is because very little that one member does is noticed by the others and is acted on by them in a way that goes further in the group. On the other hand, the human organism contains vastly more information, in all probability, than does any one of its cells. There is thus no necessary relation in either direction between the amount of racial or tribal or community information and the amount of information available to the individual.
Norbert Wiener
Seek, therefore, thyself! But in finding oneself, does not one find one's own nothingness?... Carlyle answers (Past and Present, book iii, chap. xi.). "The latest Gospel in the world is, Know thy work and do it. Know thyself: long enough has that poor self of thine tormented thee; thou wilt never get to know it, I believe! Think it thy business, this of knowing thyself; thou art an unknowable individual: know what thou canst work at; and work at it, like Hercules. That will be thine better plan." ...and what is my work? - without thinking about myself, is to love God.... And on the other hand, in loving God in myself, am I not loving myself more than God, am I not loving myself in God?
Miguel de Unamuno
The pivotal struggle which must be waged in the ranks of the working class is consequently the open, unreserved battle against entrenched racism. The white worker must become conscious of the threads which bind him to a James Johnson, Black auto worker, member of UAW, and a political prisoner presently facing charges for the killings of two foremen and a job setter. The merciless proliferation of the power of monopoly capital may ultimately push him inexorably down the very same path of desperation. No potential victim of the fascist terror should be without the knowledge that the greatest menace to racism and fascism is unity!
Angela Davis