DO YOU WANT TO CHANGE YOUR MIND?

Imagine asking somebody in the audience to change their mind
as many times as they wish, before they name a Facebook
status. They name one. After being invited onstage they are
given one last chance to change their mind. They do. Yet
still, after all this, their decision matches your
prediction. Nobody touches the prediction. The effect is
completely hands off - nobody needs to be onstage at the
time the prediction is opened.