You don't have to take it so literally. Remember we're humans, he probably meant unlimited in the sense of human experience. If a human's brain never gets full

You don't have to take it so literally. Remember we're humans, he probably meant unlimited in the sense of human experience. If a human's brain never gets full in a lifetime, the it's seemingly "unlimited" for our purposes. Just like how having 500 PB on a camera SD card would be unlimited for any photographer, yes, it has a limit, but you would never reach it without doing some crazy shit.