: With the incredible technology that we have today, why is it still impossible to have 100% accuracy on predicting the weather?
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simple answer? not enough computing power.
fluid dynamics – because gasses can be treated as fluids for purpose of calculation – would require you to input characteristics of ~every gas particle~ contained in the atmosphere in order to predict their behavior with 100% accuracy. and there is also chaotic behavior that has to be taken into account – very small change in initial conditions, can produce greatly variable outcomes. yes, this is the famous “butterfly effect”, and it does happen in the atmosphere. maybe not in such spectacular way, but surely the atmosphere is a chaotic environment.
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