Wouldn’t it be great if the next time that you took the stage to deliver  a speech, you could have somebody else come up there to help you out to  communicate the importance of public speaking? 

This other person would  always know what you were trying to say next and they would take action  to communicate the same thing that you are trying to say at the very  same moment. 

Well, things are going to get a bit crowded if you start  inviting people to be on stage with you while you give a speech, but it  turns out that your hands can help you to deliver your next speech even as you are talking.