Following on from providing a sketch outline of the healthy life extension community, let's look at the old versus the new. There are, from my impressions to date, two fairly distinct phases in healthy life extension medicine, technology, and the healthy life extension community at large. Let's call them "old school" and "new school." The old school of healthy life extension got started in earnest back in the 1970s. The new school is less than a decade old. In the community diagram, it's more or less the case that "old school" is to the right, while "new school" is to the left.