Yes you are right about everything you've stated and make a very well-reasoned argument, and I basically agree. I'm just not comfortable with accepting that we

Yes you are right about everything you've stated and make a very well-reasoned argument, and I basically agree. I'm just not comfortable with accepting that we sitting here can perfectly predict the interesting use-cases and list them. That's all. But then again there are all kinds of multitasking devices on the market, so nothing is really stopping the innovation of new use-cases. So I guess we do totally agree. I'm not so much worried about multitasking on the iPhone, since you're right that it's only currently preventing the (arguably) limited set of use-cases you describe.