Specified Complexity is billed as an explanatory filter, and it is suggested that such 'specified' complex function cannot come about by chance.
Since Natural Selection can be viewed as a filter over the random mutations that we KNOW accur in biological systems, couldn't Natural Selection be the source of this supposed 'specificity'?
Natural Selection, surely, means that what we can observe in the natural world has not, in fact, come about by chance, but has been 'directed' by the environment -- that is only changes that 'work' are carried forward.