[GHFigs]

We do not agree. I am not saying it's a crude measure, I'm saying you're measuring the wrong thing. File size is the wrong thing to measure. It doesn't matter what estimate of file sizes you can come up with, because file size is the wrong thing to measure.

Unless one is loading a moving van or trying to estimate the number of shelves required to store it, one characterizes the contents of a library by the items in the catalog and their subject matter, not by the volume they consume. You don't go in and ask for "a cubic foot of books" any more than you torrent "a megabyte of music".