(2) The argument of irreducible complexity, central to ID, employs the same flawed and illogical contrived dualism that doomed creation science in the 1980’s.
[…] However, if one simply contrasts intelligent causes with unintelligent causes, as ID does, then those two categories do constitute a mutually exclusive and exhaustive set of possible explanations. Thus evidence against the ability of unintelligent causes to explain a phenomenon does strengthen the case for an intelligent cause.
So, to compare unintelligent causes which explain a lot of phenomena to intelligent ones that explain none, unintelligent causes are the champion. And the sentences « some intelligent causal agent designed it » isn’t an explanation as far as we don’t have evidence about what/who is this intelligent agent.