> I think you are trying to simplify it more than required. At iPhone's first ever launch, there were no other versions; hell, iPhone was not even ready in Jan

> I think you are trying to simplify it more than required. At iPhone's first ever launch, there were no other versions; hell, iPhone was not even ready in Jan 2007. That's why Apple pushed the release date by 6 months. I don't understand what you're saying here. January 2007 + 6 months is still in 2007, what does that have to do with how many versions there were? > why there were so many versions of iPod? When the iPod was first released, there was also only one version. Only later through refinements did we get the Classic, Mini, Nano, Shuffle, and Touch.