YOU KNOW

You know what you know. You can also tell, quite easily, that someone else doesn't know what you know. They may be equally convinced that they know what they know - and there is no more for them to know. But as you know what you know, you know that what they know is not all that there is to know! So far, so good. But what if you hear them telling you what they know and you are overtaken by a great urge to tell them what you know?