So I wonder. All these people who claim that the iPad cannot do this, cannot do that. What do they base these claims on, considering they most likely haven't been able to use one yet (other than the very few people who got to use a prototype or demonstration model)?<p>My old Palm Pilot is "modal", but you can still happily switch between apps, do something else, come back and pick up where you left off. It would make perfect sense for the iPad to have a similar system at least, so you could e.g. download a picture from your browser, edit it in another app, then use it in a presentation using KeyNote, all without breaking stride.<p>It would also make sense to have some sort of notification bar or other system telling you that you have mail, tweets, facebook comments, IM messages, whatever.<p>(Granted, playing music might be a different story, as that would make for a heavier load on the processor as a background process.)<p>Did Apple make explicit statements about this? Did they state that this definitely isn't possible? Or are we just guessing?<p>(In case there is actual proof of this, please post a link or so. The articles I've read so far have done nothing to back up their claims.)