In my leisure time reading lately, I've noticed that several concepts just seem to keep coming up over and over again. And they're not just garden variety topics, either. One, for example, social contagion theory, is a growing area of study in social science that I read about in Psychology Today ("Is Depression Contagious?"), on Deepak Chopra's blog and in a couple of other places, all over the course of a couple of weeks.
The most in-depth article I read on the topic was a 10-screen New York Times article detailing the results of a new re-analysis of some of the data from the six-decade-long Framingham Heart Study, which resulted in the eureka-style epiphany that "good behaviors -- like quitting smoking or staying slender or being happy -- pass from friend to fri