Our kids grow up, they move on, and so must we. That’s true even if your child is an extremely popular gadget. Tony Fadell, inventor of the iPod (along with other people, but you know…he was the guy) is leaving his position at Apple to take on a reduced role as an advisor to Steve Jobs. It’s certainly simplistic to claim that Fadell “invented” the iPod when it was a team effort. Despite work by a team, and Apple hardware chief of engineering Jon Rubenstein, Fadell is still considered the popular MP3’s father.