english: Because each bit must be written onto a physical area of the disc, we're always seeking to increase the disc's areal density, or how many bits can be squeezed into one square inch.
non_english: Ker mora biti vsak bit zapisan na fizični del diska, venomer iščemo načine za povečanje gostote zapisa na disku oz. koliko bitov lahko stisnemo na kvadraten palec.