Rational behavior ... depends ...

Rational behavior ... depends upon a ceaseless flow of data from the environment. It depends upon the power of the individual to predict, with at least a fair success, the outcome of his own actions. To do this, he must be able to predict how the environment will respond to his acts. Sanity, itself, thus hinges on man's ability to predict his immediate, personal future on the basis of information fed him by the environment.
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 Alvin Toffler

Quotes from the same author

The illiterate of the 21st century will not be those who cannot read and write, but those who cannot learn, unlearn, and relearn.
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 Alvin Toffler
The biggest tragedy I had was the loss of my daughter from neuromuscular disease in 2000, at age 46.
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 Alvin Toffler
One of the definitions of sanity is the ability to tell real from unreal. Soon we'll need a new definition.
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 Alvin Toffler
In the year 2000 an illiterate person will not be someone who can't read or write, but someone who is not able to learn, unlearn and learn again.
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 Alvin Toffler
The computer is a greater threat to the [nuclear] family than all the abortion laws and gay rights movements and pornography in the world.
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 Alvin Toffler