the article doesn't make sense

iPad has a 10" screen. It doesn't make sense to do just one task
at a time. The micro-computer actually came from single task DOS type
of OS to multi-task OS. So, iPad tryes take people back to
single task computer. This could be OK if the device is
5" mobile device. It absolutely doesn't make sense for a device
with 10" screen. Apple announced iPad with iWork. Does Job really
expect those professional using iWork to do one thing at a time.