Below is a quote from Dave Pollard, the former Chief Knowledge Officer from
 Ernst & Young. It is a great paragraph because is is truly representive of
 why enterprise knowledge managment solutions failed. He is talking about the
 fact that knowledge managment systems have to be personal content management systems first.

 Quote:

 I believe personal content management tools are the place to start, because
 since the earliest days of business, the principal way of sharing information
 has been peer-to-peer, the most valued 'repositories' of business information
 have been personal filing cabinets, and the principal schema for organizing
 work has been the personal desktop. It makes sense, therefore, that tools
 that facilitate and reflect these well-established 'knowledge processes',
 information sources and networks should be much more successful than the complex,
 centralized, hierarchical knowledge management tools and repositories that have
 been foisted on users for the past decade.

 End Quote:

 It is a great quote because how is it possible that anyone could believe that
 a centralied hierarchical tool could work when it was in no way related to how
 people did and have done knowledge work since the beginning.