by pat » Thu Oct 12, 2006 6:06 am
What it's getting at there is that we only write-on/read-from two dimensions of the paper. If we had a 8.5"x11"x14.25"x6.5" paper, we'd be wasting a bunch of paper since we can't print on most of it nor could we see what was printed on most of it if we did manage.
Yes, paper's three-dimensional, but it's so very thin that we could make the same use of it if it were really only two-dimensional.