Yeah, having to know Morse code to use the phone will make it easier to use.

Funny you should mention Morse code. At some point someone suggested adding a Morse code interface to cell phones in order to speed up text messaging. A decent "Morse coder" apparently can beat the best teen texter in speed and accuracy. I can't remember where I read this but I'll post a link if I find it.

I saw a demonstration of that on Letterman one night awhile ago.

Search is not a double click on iPhone. To search, you click to get to home, a second (regular) click takes you to search.

Double click invokes multitasking panel (iOS 4).