“Incomplete knowledge of the future, and also of the past of the transmitter from which the future might be constructed, is at the very basis of the concept of information.”

— Dennis Gabor

"Optical transmission" in Information Theory : Papers Read at a Symposium on Information Theory (1952), as cited in Living Systems (1978) by James Grier Miller, p. 12
Context: Incomplete knowledge of the future, and also of the past of the transmitter from which the future might be constructed, is at the very basis of the concept of information. On the other hand, complete ignorance also precludes communication; a common language is required, that is to say an agreement between the transmitter and the receiver regarding the elements used in the communication process...
[The information of a message can] be defined as the 'minimum number of binary decisions which enable the receiver to construct the message, on the basis of the data already available to him.' These data comprise both the convention regarding the symbols and the language used, and the knowledge available at the moment when the message started.

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Dennis Gabor 4

Nobel Prize-winning physicist and inventor of holography 1900–1979

Robert L. Heilbroner book The Worldly Philosophers

Source: The Worldly Philosophers (1953), Chapter XI, Beyond the Economic Revolution, p. 317

“The past is a source of knowledge, and the future is a source of hope. Love of the past implies faith in the future.”

Stephen E. Ambrose (1936–2002) American historian

“Philosophical knowledge is the knowledge gained by reason from concepts; mathematical knowledge is the knowledge gained by reason from the construction of concepts.”

Immanuel Kant book Critique of Pure Reason

A 713, B 741
Critique of Pure Reason (1781; 1787)

“His work modifies our conception of the past, as it will modify the future.”

Jorge Luis Borges book Other Inquisitions

"Kafka and His Precursors" ["Kafka y sus precursores"], as translated in Labyrinths (1964)
Variant translation: The fact is that all writers create their precursors. Their work modifies our conception of the past, just as it is bound to modify the future.
Other Inquisitions (1952)
Context: In the critic's vocabulary, the word "precursor" is indispensable, but it should be cleansed of all connotations of polemic or rivalry. The fact is that every writer creates his own precursors. His work modifies our conception of the past, as it will modify the future.

“Full knowledge of the past helps us in dealing with the future.”

Theodore Roosevelt (1858–1919) American politician, 26th president of the United States

1910s, The Progressives, Past and Present (1910)
Context: Inasmuch as it is so often impossible to punish wrongs done in the past, and to prevent the consequences of the wrongs thus committed being felt by one innocent class, without shifting the burden to the shoulders of another innocent class, we ought to provide that hereafter business shall be carried on from its inception in such a way as to prevent swindling. Incidentally, this will also tend to prevent that excessive proﬁt by one man, which may not be swindling, under existing laws, but which nevertheless is against the interest of the commonwealth. To know all the facts is of as much interest to the investor and the wage-worker as to the shipper, the producer, the consumer. Full knowledge of the past helps us in dealing with the future. If we ﬁnd that high rates are due to overcapitalization n the past, or to any kind of sharp practice in the past, then, whether or not it is possible to take action which will partly remedy the wrong, we are certainly in a better position to prevent a repetition of the wrong.