Laplace’s Demon

Ever hear of the French physicist Pierre-Simon Laplace?

Laplace is credited with the following famous quotation which is often referred to as “Laplace’s Demon”.

“We may regard the present state of the universe as the effect of its past and the cause of its future. An intellect which at any given moment knew all of the forces that animate nature and the mutual positions of the beings that compose it, if this intellect were vast enough to submit the data to analysis, could condense into a single formula the movement of the greatest bodies of the universe and that of the lightest atom; for such an intellect nothing could be uncertain and the future just like the past would be present before its eyes.”

— Marquis Pierre Simon de Laplace

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