FTA, quoting Andy Rubin:
“To make our schedule to ship the tablet, we made some design tradeoffs. We didn’t want to think about what it would take for the same software to run on phones. It would have required a lot of additional resources and extended our schedule beyond what we thought was reasonable. So we took a shortcut. We have no idea if it will even work on phones.”<p>I'm no Apple Fanboi (I'm a Linux fanboi, if anything), but this shows what a phenomenal job Apple has done with iOS.