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Technological singularity is a term used with varying meanings related to self-improving artificial intelligence, superintelligence, breakdowns in the predictability of the future, accelerating change of the exponential or superexponential/catastrophic sort, and more generic "big events" in history.
In 1965, I. J. Good first wrote of an "intelligence explosion", suggesting that if machines could even slightly surpass human intellect, they could improve their own designs in ways unforeseen by their designers, and thus recursively augment themselves into far greater intelligences. The first such improvements might be small, but as the machine became more intelligent it would become better at becoming more intelligent, which could lead to a cascade of self-improvements and a sudden surge upward to superintelligence.
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