Introduction

This week's episode comes in three parts. The first part is an introduction, the second part a lecture that was filmed years ago,. And the third part, i'm walking through a power point a presentation done yesterday on april fourth. I would highly recommend that after you get through section one, which is not very visually dependent, switching to youtube, where the symbols that are being discussed can be seen. It may not make sense to all of you, but i think it will be a richer experience as sections two and three are targeted at the professional community.