Instead of touching single characters on the keyboard, we will be “writing” words by swiping from one character to the next.
It will be just like when we were still writing by hand. This idea is already out there, invented by the creators of the app Swype, soon to be used on all devices.
Future problem: Your text might change with the energy of your swiping fingers. Think about being on-the-run in your swipe mode — your tone might become just a little more snappy...