Eink is in its infancy even if its technology is at a higher step than the first watch displays were from today's computer displays.
I think Sony was clever to find it its present function. It is a perfectly marketable iteration and there should it stay.
Study devices exist in the form of LCD Tablet computers and laptops. It is the manufacturers of those devices that have to hone their markets and produce a more adequate product. When technology permits, eink will join in the fray. For now only the Iliad allows the necessary search and input functions required for study and business and it does not reflect the power management eink is regarded for.
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