A Partial History of Knowledge Navigation

Long-time inspiration David Sibbet posts about how Alan Kay and others inspired the iPad and points to a number of future looking Apple publications that I remember well.   I remember hearing Kay give a talk about how portable tablet devices would link us to a wealth of information.  He conceived the notion of a 'Dynabook' tablet.  Easily and immediately accessible knowledge.  The post also points to several videos circa 1988 that predicted the world of today.   A reminder of the rich history involved.