How did the Japan people developed the smart toilets?

They are called Japanese.

The main way of travel to Japan is by airplane. However, for people who live close to it, they may not need to fly.

yes, me and a couple of my friends are both dorky and smart ;)

Teaching English and if you're fluent and attractive, Host clubs.

Since there is no scale for determining someone's amount of smart-ness one cannot say how smart human beings really are. To get a feel for how smart people are in general you would have to find the...