General purpose computers are system-integration machines. My mother searches the web for content and drags/drops snippets into presentations; emails photos to

General purpose computers are system-integration machines. My mother searches the web for content and drags/drops snippets into presentations; emails photos to friends; sends letters via fax. Those are all inter-app activities that she couldn't do on an iPad. A friend with an iPad sync'd his Dropbox folder to it; clicked a file and chose "Send to Pages", edited it, and then ... Well, he couldn't save it back to his Dropbox because Pages doesn't support it. I thought trapping content in apps was a bad thing.