Computer games designers have known for a long time the importance of making elements in an environment be aware of what they are and able to communicate this. This is what interactive environments are made of.
The same goes for knowledge work but here we are severely hampered at the moment.
Imagine if you knowledge elements knew what they were and how they can relate to other elements. Imagine if you could jot down your thoughts anywhere and that your knowledge system will know this. Imagine writing a note in the margin of a document or in a notes application. Then imagine searching for notes in your knowledge system based on keywords and perhaps time and all the notes appear, even if they are buried deep in documents. This is the power of advanced visual-meta: visual-meta Annotation Appendix added after the regular visual-meta, where the system notes any annotations you have written in the document so that this may be searched from outside the document.