My sojourn into the Spider's Web
The Nano may seem superficially iPod-esque on the outside, but on the inside it has been completely, painstakingly, exhaustively re-engineered. Older iPods (except for the low-capacity iPod Shuffle) have miniature hard drives in them, but the Nano is built around a chunk of solid-state Flash memory. The screen is all new too. Because it's smaller, the Nano's screen has to be sharper to be readable. (It ended up being so sharp, it shows one line of text more than the Mini's screen does. In color too.)