12 Tech Revolutions That Fizzled

Virtual reality and its oversize helmets. The Segway scooter. AT&T's Picturephone from 1964? These tech innovations and more were supposed to change your life. Whoops!
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"Revolutionary" is a term that the tech industry likes to throw around. A case in point is the recent announcement of Lytro, a type of camera that promises to eliminate the need to focus on a subject before snapping a picture.

We offer the fine folks at this startup our best wishes, but we can't help but be skeptical. After all, we've heard bold predictions of revolutionary impact before, and the results haven't always been pretty. For skepticism's sake, let's review 12 ballyhooed tech revolutions that didn't pan out.

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