I think your corespondents may be missing the point about contrast ratios and electronic paper. If you have a display that emits light, rather than working with reflective light [the way paper does], the reflective display will have a lower contrast ratio. However, in 'normal reading' this is an advantage. It is generally acknowledged that it is not as comfortable to read small text from a glowing display as from a reflective display [i.e a book, magazine, or paper]. It's horses for courses.
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I think your corespondents may be missing the point about contrast ratios and electronic paper.
If you have a display that emits light, rather than working with reflective light [the way paper does], the reflective display will have a lower contrast ratio. However, in 'normal reading' this is an advantage. It is generally acknowledged that it is not as comfortable to read small text from a glowing display as from a reflective display [i.e a book, magazine, or paper].
It's horses for courses.