Why is that a paradox? Directed search is going to be more efficient than undirected search. Large search spaces are often only tractable when you discover and exploit gradients.
The (naive) evolutionary approach works in the absence of a model of the solution space, at the expense of being unable to cross its discontinuities.
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Should that be 'able' and not 'unable'? Also 'benefit' and not 'expense'?
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Evolution requires a somewhat viable solution at every step, and derives the next one by mutating the previous one. That means that it cannot cross a chasm of unviability.
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