"Picasso had a saying: 'Good artists copy, great artists steal.' We have always been shameless about stealing great ideas..." --Steve Jobs
Virtually all of the salient features of the original Mac were invented & 1st put into daily use at Xerox Parc. The 1st mp3 player, upon which the iPod was based, was 1st seen at Diamond Labs. Based on Steve's history of putting pretty covers on others' ideas & calling them his, to paraphrase a line from the movie Paper Moon -- if Steve's selling it, you can bet it was invented by someone else.