If you prefer to listen rather than read, this blog is available as a podcast here. Or if you want to listen to just this post: Or download the MP3 Many, many years ago, someone described a framework for categorizing knowledge about an individual. As with so many of these things there are two axis and four quadrants. The X axis is what the individual knows about themselves, with one column for things that are known and one column for things which are not known. The Y axis deals with what other people know about us and, similarly, there’s one row for the known and one for the unknown.