There are these little notches on the bottom of the scroll wheel and center button where they connect to each other and the body of the iPod. This basically makes them turn together. Therefore, when you turn the wheel, the button turns with it. Also, when you twist the button around, it turns the wheel.
It would have been much better if they were kept independent of each other. I'm always selecting the wrong songs/options because my thumb sometimes turns the button a bit as I go to press it, causing the iPod to scroll up or down a line.
<small>[ 06-04-2002, 09:25 PM: Message edited by: SupahCoolX ]</small>