Atheos canadensis writes:
If morphology can be used to reliably infer relatedness in the Cat "kind" for example, why can the same method not be used to infer that cats are more closely related to canids than artiodactyls?
I think it's a forced (deliberate) inconsistency. If you ask a creationist, "Which is more closely related, a cat and a dog or a goldfish and a dandelion?" he'll probably answer instinctively, "a dog and a cat."
If you point out that dogs and cats aren't supposed to be related at all....
It's human nature to see patterns whether they're real or not. We see relatedness where there may not be any. Creationists have to work hard at unseeing it.