Somone has suggested that
Within, say, a collection of every possible 30 second long MP3 file encoded at 128kbps, I'd probably be infringing on a few thousand copyrighted works.
128kilobits per second = 128,000 bits per second * 30 seconds = 3,840,000 bits.
There are 2 to the 2,840,000 possible files of that length.
Ignoring the fact that most of those won't be valid mp3s, how can I quantify the amount of space needed to store all those files? For instance, is that more bits than there are atoms in the universe?