This is the 12th of 23 presentations in a series introducing and outlining my hypertext book project, "Application Holy Wars or a New Reformation - A Fugue on the Theory of Knowledge. The project explores the interactions of technology and cognition in the extraordinary evolutionary history of the human species. This presentation wraps up my discussion of the history of technologies used to enhance and extend human cognition. Because most of what I had planned for this talk has already been covered and/or discussed in the previous presentations, I thought that it would be much better to take the chance for a general review discussion of the main take-home messages to now, and to give a preview what remains to be covered in the second half of the series.