Hmm, I don't remember that, but I guess it was to throw us off. The whispers come about in a lot of places where we know that no others are around. Like the times Walt appeared Shanon as well as many other manifestations of smokey. Usually the whispers are backwards recordings or distorted in other ways. You can find sites on the internet where you can download sound clips of all the whispers and where people have listened to them at different speeds and by reversing them and they claim to be able to make out what is being said. They even have trascriptions for the whispers. I have listened to some but I can't make out a word, I think the people who transcribe them are hearing voices in their own heads. But regardless, if you look at the places where the whispers appear, there is a lot more too them than hiding others.