I was given a silly slogan regarding OJ trial, that betrayed no logic. Were I given any kind of "chain of reasoning" I would have, perhaps, responded differently.
We don't need to argue in detail the diameter of the earth. It is assumed that literate people know this.
Literate people, especially those attempting to change the teaching policies of schools, better know the evidence that supports evolution. If you don't know it you can't argue against it.
Now this argument is rather long, and every time we post it, we are accused of spamming the threads.
The fact that the DI "scientists" haven't attacked it yet is evidence to the fact that they haven't found a good spin against it. But I'm sure that we can count on them to come up with something, just like OJ's lawyers did.