Le Libertaire, No. 6, September 21, 1858 ( French http://joseph.dejacque.free.fr/libertaire/n06/lib01.htm; English http://libertarian-labyrinth.blogspot.com/2011/12/joseph-dejacque-on-exchange.html)
“Two centuries ago Leibnitz invented a calculating machine which embodied most of the essential features of recent keyboard devices, but it could not then come into use. The economics of the situation were against it: the labor involved in constructing it, before the days of mass production, exceeded the labor to be saved by its use, since all it could accomplish could be duplicated by sufficient use of pencil and paper. Moreover, it would have been subject to frequent breakdown, so that it could not have been depended upon; for at that time and long after, complexity and unreliability were synonymous.”
As We May Think (1945)
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Vannevar Bush 57
American electrical engineer and science administrator 1890–1974Related quotes

"The Role of Mathematics in the Sciences and in Society" (1954) an address to Princeton alumni, published in John von Neumann : Collected Works (1963) edited by A. H. Taub <!-- Macmillan, New York -->; also quoted in Out of the Mouths of Mathematicians : A Quotation Book for Philomaths (1993) by R. Schmalz
Context: A large part of mathematics which becomes useful developed with absolutely no desire to be useful, and in a situation where nobody could possibly know in what area it would become useful; and there were no general indications that it ever would be so. By and large it is uniformly true in mathematics that there is a time lapse between a mathematical discovery and the moment when it is useful; and that this lapse of time can be anything from 30 to 100 years, in some cases even more; and that the whole system seems to function without any direction, without any reference to usefulness, and without any desire to do things which are useful.

Source: Social Problems (1883), Ch. 13 : Unemployed Labor

Source: His Dark Materials, The Subtle Knife (1997), Ch. 15 : Bloodmoss
Context: If you're the bearer of the knife, you have a task that's greater than you can imagine. A child... How could they let it happen? Well, so it must be.... There is a war coming, boy. The greatest war there ever was. Something like it happened before, and this time the right side must win. We've had nothing but lies and propaganda and cruelty and deceit for all the thousands of years of human history. It's time we started again, but properly this time...."
He stopped to take in several rattling breaths.
"The knife," he went on after a minute. "They never knew what they were making, those old philosophers. They invented a device that could split open the very smallest particles of matter, and they used it to steal candy. They had no idea that they'd made the one weapon in all the universes that could defeat the tyrant. The Authority. God. The rebel angels fell because they didn't have anything like the knife; but now..."
"I didn't want it! I don't want it now!" Will cried. "If you want it, you can have it! I hate it, and I hate what it does — "
"Too late. You haven't any choice: you're the bearer. It's picked you out. And, what's more, they know you've got it; and if you don't use it against them, they'll tear it from your hands and use it against the rest of us, forever and ever."

"The Organization of Labor," http://ebooks.library.cornell.edu/cgi/t/text/pageviewer-idx?c=nora;cc=nora;g=moagrp;xc=1;q1=The%20Organization%20of%20Labor;rgn=full%20text;cite1=Powderly;cite1restrict=author;view=image;seq=0122;idno=nora0135-2;node=nora0135-2%3A2 North American Review, vol. 135, no. 2, whole no. 309 (Aug. 1882), pp. 118–9.