Tracking a factoid to its lair
Matt Richtel, one of the leading current peddlers of the "technology is eating our brains" meme, is fond of this assertion:
The average person today consumes almost three times as much information as what the typical person consumed in 1960, according to research at the University of California, San Diego.
That version is the lead paragraph of the online site for his appearance on Fresh Air, "Digital Overload: Your Brain On Gadgets", 8/24/2010. I was curious about what this sentence could mean, and more specifically, I wondered which UCSD researchers did the measurements, and what they they measured. Usually I can track down the source of a factoid from the scant clues typically left by passing journalists, but this one has defeated me, so I'm asking for help.
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