In 2011, Eli Pariser’s excellent book The Filter Bubble complained that the increasingly personalized web was giving people facts that confirmed their pre-existing viewpoints while hiding the information that didn’t. (His partial responsibility for creating this phenomenon with Moveon.org went mostly unsaid, but whatever, it was a good book).
The problem is that Mr. Pariser moved on to create another filter bubble. This time not a political or ideological filter, but a filter on reality itself.
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