When Michael was in the Swan station and someone started trying to communicate with him on the computer and it apparently was supposed to be Walt, I was wondering if that was his imagination, or the Others were trying to trick him, or it was Walt. I believe it was Michael's imagination because he was so crazy about finding Walt that he imagined the whole thing because when Jack walked up the entire screen went blank. A friend of mine says it was a trick by the Others to get Michael to come to them to get captured. I'm not really sure. What is your opinion?