Again, you'll see a good example of that, where closed questions are good in a situation if you want to get a direct answer to somebody who tends to waffle, but again, if you're asked closed questions and you want to give information, it is harder, it's easier if you ask somebody an open question and on the film, John Cleese comes up with the starters to an open question, which are the Who, What, Which, Why, Where, When questions.