What will the next big invention be in the world? comparible to the computer?
A machine-to-brain interface which will transmit and receive simply emotional signals from one brain to another using some form of localized wireless. People using such a device(s) will be able to "feel" the emotions of another person directly, rather than trying to interpret them through language and gesture.
Group interfaces will evolve rapidly along with selective circuits so that people can receive many or receive only one. At first it will start with localized connections, but it will quickly be adapted to the Internet like IP Phone calls.
As a result, a new level of human language/communication will evolve which will allow people to match the words someone else is saying to the feelings they are having at the same time.
Humanity will become addicted to the interface almost immediately and acceptance will sweep the planet like cell phones. A new age of human communication will rise with pitfalls and benefits. But it will change everything, just as the computer has.
So in the world of the future, I could put myself online and you could not only read what I have written, but you could feel how I feel about it, and know if I'm only joking or if I'm serious.