The time will come when human can do almost everything with the technology and still one thing remains impossible, releasing addiction on technology.

Time travel..will never be impossible forever.

Size does matter. Nano even better.

Technology has made a significant difference to the society. The question is, 'How far this difference be able to unite the society?’

Analogy of scientist who try to reach the higher speed:
A child ant is tired after the long walk in a body of a jet.
It tries to find a method of traveling faster than walking.

Dreams and needs tear down fortress of impossibility.