One by one, Marshall McLuhan’s wackiest-seeming predictions come true. Forty years ago, he said that modern communications technology would turn the young into tribal primitives who pay attention not to objective “news” reports but only to what the drums say, i.e., rumors.

And there you have blogs. The universe of blogs is a universe of rumors, and the tribe likes it that way.

Blogs are an advance guard to the rear. For example, only a primitive would believe a word of Wikipedia (which, though not strictly a blog, shares the characteristics of the genre). The entry under my name says that in 2003 “major news media” broadcast reports of my death and that I telephoned Larry King and said, “I ain’t dead yet, give me a little more time and no doubt it will become true.”