The iPad is lucky in that it could start afresh with many ideas.
- They keyboard represents letters of the alphabet, and it only appears when it's needed, compared to my laptop keyboard which has about 30 obscure buttons that have almost no use to most casual users.
- You interact with only the content directly through touch, rather than through a mouse or touch pad that is on a perpendicular plane to the display.
- Making text bigger is as easy as pinch to zoom.
- There's much less that can go wrong as each app is sandboxed and access is limited. People can be more confident in their actions.
My 2 year old niece can quite easily play youtube videos yet I've seen my 90 year old Grandad struggle with a mouse, using his second hand to click the button. For either of them, there's little that they'd want to do on a laptop that couldn't do much more simply on a tablet.