Monday, July 17, 2006

The Half-life of Information is 36 Hours

News Online Seems to Have Long Shelf Life - New York Times: "A new research paper seeks to answer a riddle for publishers, editors and even readers: when does new news become old news?

In the case of a news article on the Internet, the answer is surprisingly long: 36 hours on average, according to the paper, "The Dynamics of Information Access on the Web," which appeared in the June issue of Physical Review E, the journal of the American Physical Society.

More precisely, 36 hours is the amount of time it takes for half of the total readership of an article to have read it, the paper found. The physicist who led the research, Albert-Laszlo Barabasi of the University of Notre Dame, said that the paper's conclusion should give journalists hope, even in the era of instant news. Dr. Barabasi said that traditional ideas about the way people use the Internet would have led researchers to expect a much shorter half-life, more like two to four hours."


This is amazing research in that it quantifies what publushers have always wondered- what is the time value of information? In other words, if news has a 36 hour shelf life, daily newspapers can compete...

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