when I see text on US letter, I tend to struggle reading it fast. This is because I find it hard to find the next line after I read to the end of a line. I thin

when I see text on US letter, I tend to struggle reading it fast. This is because I find it hard to find the next line after I read to the end of a line. I think there is an optimal line width that allows the eyes to flow from line to line, and documents in the US letter format does seem to regular exceed that. Of course this is not intrinsically the fault of the paper size. The lines could just be narrower. But then you get a massive margin, which is often not what you want for a /letter/. At least not one printed on 10pt or 12pt. Once you put notes in the margins, or double column layout, US letter might be superior. Maybe also for typed letters as the words tend to be wider in that case. I am curious if people experience the same, or potentially the other way around.