Video based on Don Johnson's Programming of Life Book, see djpol.info. Intended for free access and may be copied for educational purposes. This a low-resolution (for limited bandwidth) version is not suitable for large group viewing. A MP4 version can be down-loaded or "chapters" viewed at programmingoflife.com/watch-the-video (full video should be there soon). A presenation with more technical information is viewable at vimeo.com/28963153.