Ken Ham has a shady answer

PZ Myers over at Pharyngula has a pretty good take down of a ridiculous answer to the question: "how do we know other religion's aren't true" posted by Ken Ham a prominent member of the young-earth creationist movement.  However, this answer by Ken Ham was so insane and dishonest that I find it necessary to also address Ham's answer.

Now to start I want to point out that this answer is in the "Kids Answers" section on Ken Ham's webpage.  Thus  the answer is being addressed at those who might not have the necessary knowledge and tools to analyze the answer.  To me this makes Ham's answer that much more foul and insidious.  However, I have to say that I bet that a lot of kids could even see the glaring logical problem sitting in Ham's answer.