Once upon a time there were jokes. These were little stories with a beginning and a shock ending, with an optional middle.There is a setup:A hamburger walks into a bar.A bit of story:The bartender looks at the hamburger.Then a punchline:“Hey, we don’t serve food here.”Ha Ha.Bob Newhart and Bill Cosby changed all that a few million years ago in the fifties and sixties by making the optional part two of story telling so good that they didn’t need a punchline to get a laugh. Sienfield took it to the point of there being nothing but the setup and there never…