After reading the Lesson Seven material, go the the following link and read the essay by Carl Sagan entitled A New Way To Think About Rules To Live By: http://tetrahedral.blogspot.com/2011/12/carl-sagans-new-way-to-think-about.html […]
After reading the Lesson Seven material, go the the following link and read the essay by Carl Sagan entitled A New Way To Think About Rules To Live By: http://tetrahedral.blogspot.com/2011/12/carl-sagans-new-way-to-think-about.html […]