Of Climate Models and Hurricane Predictions

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A non answer answer to a perfectly legitimate and reasonable question. Why?

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What have I not answered?

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To be more explicit, if the equation involves the following variables:

X: the degree of certainty as the accuracy of current models

Y: the severity of the consequences if those models were 100% accurate

Z: the cost of measures required to prevent those consequences

then what degree of certainty, X, as to the accuracy of current models do you believe is required to justify the expense, Z, of preventing the worst case scenario, Y?