Now the trouble about trying to make yourself stupider than you really are is that you very often succeed. Uncle Andrew did. He soon did hear nothing but roaring in Aslan s song. God has given us the freedom and responsibility to do that. This is what Lewis means when he says our view of the world depends on where you are standing and what sort of person you are.
Sin always warps our perception of truth.
As a result, Andrew cannot afford to believe what is happening around him. He finds himself terrified of the newly-created Talking Animals, and becomes a figure of fun as they try to work out whether he is animal, vegetable or mineral. If I spoke to him, he would hear only growlings and roarings. The children and other visitors to Narnia find joy, but Andrew defends himself against such a disturbing gift. In The Voyage of the Dawntreader, we see more of what sin can do to people, and more of what it takes to be redeemed and to find that joy.