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- e-ink has garbage level latency, which makes it useless for anything even slightly dynamic, including educational videos of course

- e-ink doesn't have color, color is helpful in educational material to make it friendly and accessible

- there are outlets everywhere, so unless you're going camping, the battery life is not that big of an advantage, more of a slight convenience thing

all of these points are why tablets aren't going anywhere

The ReMarkable has, by some black magic, managed to reduce the latency by quite a lot compared to, say, a Kindle.

Only for writing, not for getting to the next page.

Because they update a small part of the screen, full page turns still take time

Tablets have strong light intensity that make them unsuitable for reading causing more eye strain than e-ink.

The first thing I did after trying to read on a tablet was to buy a Kindle.

Reading on a tablet, minutes, reading on a e-ink device, hours.