How will the world change in the next 20 years?

I don't know how the world will be at all in the future.
But I can imagine that.

I think many machines and robots will be invented and the world will become more convenient than now.
And people can live comfortably.
For example, cellphone and computer have a lot of new functions.

Also, medical science will develop and diseases which be incurable now may be cured.
The number of people who cannot be cured by any doctor may decrease.

I'm looking forward to see how the world will change 20 years later.