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Whenever logical processes of thought are employed- that is, whenever thought for a time runs along an accepted groove- there is an opportunity for the machine. Formal logic used to be a keen instrument in the hands of the teacher in his trying of students' souls. It is readily possible to construct a machine which will manipulate premises in accordance with formal logic, simply by the clever use of relay circuits. Put a set of premises into such a device and turn the crank, and it will readily pass out conclusion after conclusion, all in accordance with logical law, and with no more slips than would be expected of a keyboard adding machine.

Vannevar Bush#24

AutomationEducationLogic

About this quote

What does it mean?
Formal logic is rigid enough to be automated by machines using relay circuits. These devices can process premises and generate conclusions reliably like a keyboard adding machine.
In plain terms
Logical rules can be built into machines to automate thinking.
What can you take from it?
Automate logical tasks using mechanical or electronic systems.

Where it applies

  • computer science history
  • logic education
  • system design

Putting it to work

  • build logic circuits
  • teach formal logic
  • design automated systems

Questions to consider

  • Can machines truly think?
  • Where does logic end and insight begin?

Another view

Machines handle formal logic well but may lack contextual understanding.

More from Vannevar Bush

  1. A mathematician is not a man who can readily manipulate figures; often he cannot. He is not even a man who can readily perform the transformation of equations …

    Permalink to quote #23
  2. There may be millions of fine thoughts, and the account of the experience on which they are based, all encased within stone walls of acceptable architectural f…

    Permalink to quote #25
  3. It is a far cry from the abacus to the modern keyboard accounting machine. It will be an equal step to the arithmetical machine of the future. But even this ne…

    Permalink to quote #22

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