You can probably guess who's going to win this fight. The quick of it is that the two of every kind cannot mean two of every species the Ark would have to be impossibly large. No real argument there even most apologists will admit that much. The claim is we gotta go up a couple steps to families of animals in order to get to a reasonable number. Unfortunately for the bible thumpers this leads to a massive amount of microevolution in a very short period of time in order to account for the world we see around us. Jeff the Fish lays it all out there in a quick and succinct manner thats well worth the couple minutes it takes to read.
HT to PZ.