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Thanks for the link. The general premise may be correct but since textbooks are usually printed at 1200 DPI equivalent on paper with better contrast than Pearl E-ink (and very few smudges, lol) I think that concern is incorrectly placed.
The concept doesn't sound terribly different than how we pay more attention to things we pay more for. I've read about experiments showing an expensive bottle of wine or meal tastes better than the same item sold much more cheaply.
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