How the world will change?

I think the world will certainly change in the next 20 years. Even today, the world are changing in many ways, so I think it will have achieved a great change in the next 20 years.
The world we are living now have always been changing, especialy since 20th century. Particurarly, deveropment of technologies are remarkable, so I think the changes which may occur are based on them, for example flying car, very small computer, or higher-powered computers than today's one.