An archaeologist has some idea of what the designers in question are like. If an archaeologist finds an aluminium cylinder block in stone age strata then she knows that it was not made by stone age designers - she has some idea of what a stone age designer is and is not capable of. ID has no idea at all of what their designer/s can or cannot do. ID cannot even say if there was one or more designers. An archaeologist knows far more about her designers then ID does about its designer/s. That is part of ID’s problem - a designer with undefined powers can never be disproved. If something cannot be disproved then it is not science.