Monday, July 25, 2011
Tuesday, July 19, 2011
Local groups might have hundreds of people and a population density that is ten times that of the family/tribe. This is near the limits for the number of strong links one person can manage, (embodied in the concept of the Dunbar number), and so weak links may start to emerge within the Local Group. Protection of those resources requires keeping other tribes at bay, so interaction with others, when it does occur, is often violent rather than cooperative. But it is within the local groups that weak links begin to form as they reach out in informal trade, and begin the transfer of technology, such as methods of farming and storage, toolmaking and the like. The result is greater stability than for the isolated family/tribe.
I'd Like to Teach the World to Sing
Labels: Virtual Age
Saturday, July 16, 2011
If you read to the last chapter of my book, A Demon of Our Own Design, then you know that I like Brazilian Jiu Jitsu (BJJ). I have just passed the fifteen year mark of studying at the Renzo Gracie Academy in New York. During that time I have seen the academy grow from twenty or so students, most all beginners, to a thriving center with hundreds of students and a dozen world-class instructors, most of whom started their careers with Renzo and began studying jiu jitsu well after I did. I have had the opportunity to study with several of them (linked here to their respective academies) – Shawn Williams, Brian Glick, and the inimitable John Danaher – though through the combined limits of age, talent and time, my development has followed what might charitably be called a slow trajectory.
Here I am with Brian Glick (to my right) and John Danaher. (In case your wondering, I photoshopped out some stuff on the shirts).