alt Hacker NewsAs a long time European I never thought I’d come to see the sense of American ways, but having lived here now for a couple of years, it actually is easier for it to just be straight up 8.5 x 11 rather that a ratio that includes a square root.
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I've been working with paper sizes a lot for the last year, and I've rarely thought about the square root of two ratio and when I've, it has been just to amuse myself. However, knowing that to get an A5 piece of paper I just need to cut/fold in half an A4, and that I can get to A3 and A2 by adding A4s, has been really useful. If I were in USA, didn't have that, and instead would have to install yet another new size system in my head[^1], I would despair.
[^1]: This is fun! https://papersizes.io/us/
What bothers me mostly about American papersizes (I’m also a European immigrant) is that the ratio is not consistent between sizes. So if I design a poster, but want a couple of letter sized printouts for some reason, I have to create a whole new design, rather then just shrink everything down. Otherwise the margins get all wonky.
One nice thing with Letter size is you can fit 80 columns of 10 dpi text with standard LaserJet margins. With A4 you have to squeeze the characters together slightly to make that fit.
It's an interesting tiny trade-off.
Everyone makes paper the same hypothetical way, by producing large sheets and cutting them in half, and ANSI E (34"x44" or 864mm x 1118mm) isn't that different than A0 (841mm x 1189mm), but the slight starting difference means that there are two aspect ratios for ANSI (17/22 and 11/17). On the one hand, they're simple fractions and not irrational numbers; on the other, they're different, so you can't just double the size of something printed on ANSI A/letter sized to fill ANSI B/tabloid size, the way you can go from A4 to A3.
Only a small subset of users will ever want to do that (since if you're printing text you probably need to re-typeset it to keep the type a good size for reading), but only a small subset of users actually care about the aspect ratio or exact dimensions of their paper at all, so whether it is 8.5 or 8.11 or 8.314159... inches doesn't really matter.