Almost no actual applications are suitable for eInk. For instance it's impossible to use Firefox, thunderbird, Notepad++, MS Office, Libre Office etc in paged mode rather than "infinite" scroll mode.
The best solution is to never work outdoors, have controlled artificial lighting, non-glare/matte LCD screen and brightness such that white is about the same a paper under the ambient light. Most people have the brightness too high and lights or daylight reflecting of the screen. Do not be facing into lighting or daylight.
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