A round of Web 2.0 reductionism
The idea of reductionism holds that the nature of complex things can always be reduced to simpler, more fundamental ideas. In contrast, Tim O'Reilly's now-famous meme-map of Web 2.0 is a terrific piece of largely holistic analysis. Holisim, which is the opposite of reductionism, says that the properties of any given system cannot be determined by the mere sum of its parts. In a small but important way, this captures an essential aspect of the debates that swirl around Web 2.0 and the next generation of the Web in general.