The soup of complex molecules from which life is thought to have emerged is something that brings itself about naturally. How? Because the reactions that produce those types of molecules are catalysed by the products of those reactions. In simple terms(I hope), complex molecules are more likely to be catalysts for the formation of molecules similar, or more complex than themselves, and because of this, any formation of such a self-catalysing molecule will propagate itself rapidy through the system, providing the chances for further degrees of complexity to occur, which will then further propagate, specialise and in turn add a new level of complexity...and so on.
Order comes for free in this universe.
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