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I'm impressed that 40% of the people surveyed knew what an e-reader was let alone were mildly interested in purchasing one. We've come a long way.
How many people need a digital camera? How many use them all the time? I have two dedicated digital cameras, plus the one in my phone plus a broken one in my PDA. I use one of them once a year on vacation. Do I need them? No.
If you surveyed 1,000 people how many would say they were interested in buying a telescope? Who cares. There's a viable market for them.
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