Kurt Gödel walks into a bar and says, "Because we're inside the joke we have no way of knowing how funny it is".
Heh heh :-) Retold from this AskReddit entry.
Why no comments? I used to do public comments but found that moderating and maintaining them took too much time in front of the computer, time better spent playing outdoors. So these days I only do private comments, that is, you can email me comments regarding a post by clicking the 'Comment' link at the bottom the post.