Several people here keep harping on the “nested hierarchy” thing, Bill. I gave up arguing with them about it long ago. First they always try to give the impression (even if they don’t claim it directly) that design is incompatible with a nested hierarchy, and bully their opponents into submission that way, but then, when it’s demonstrated that design is not incompatible with a nested hierarchy, they change the argument to: “Well, design is only compatible with a nested hierarchy, whereas unguided evolution predicts a nested hierarchy, so unguided evolution is the right view.” But of course, since either view is compatible with a nested hierarchy, the existence of such a hierarchy doesn’t constitute a proof that unguided evolution is true and design is false. A philosopher can see this, but apparently some scientists can’t.