I found this link over at the O’reilly blog. Th3sis in Three. It’s something I believe is transferable to any subject or field of work. “I reckon that every scientist should be able to explain his or her work to any audience, in any situation. Whether it is a 30 second conversation with a six year old with the aid of a pencil and paper, an oral presentation to the general public (a la cafe scientifique), or a detailed effort using all the functionality of Microsoft Powerpoint at a specialist conference, it should be possible to convey meaning to your audience. In fact, if I’m feeling brave, I would go as far as to suggest that if a scientist is unable to do this, it is an indication that he or she does not understand the topic him- or herself.”