Comment by scottlocklin

I agree with this sentiment when using a paperwhite tablet (glowing screens with stuff formatted for paper is painful). Serial reading, ebooks are fine.

There are a few cases where a PDF/djvu textbook with strategic bookmarks can also be used. When I'm on the road I have a decent reference library in a rooted Kobo H2O running koreader. Not an ideal solution; something with an 8x12 screen would be much closer to it, but nobody makes these any more, and if I need to look something up in Golub, it can be done.

FWIIW the only thing that makes this doable is koreader does reflow on columnated text.