It struck me that the simplest message you can give about KM, is that the goal of KM is to harness
"The knowledge of the organisation in support of every business decision"
It's that vision of organisational knowledge as a resource to the individual to help them make better decisions. As one of my previous work colleagues used to say - "We have this massive know-how - why would you not want to use it? It will make your life easier, and you will do a better job"