As Einstein trully said:

"Imagination is more important than knowledge.”

Think of it this way. Nearly a hundred years ago, nobody could believe that some day, human being can fly and even travel to Moon. They all used to imagine how it would be. It was actually many scientists and researchers imagination which pushed them to carry on and acquire more knowledge to advance the technology up to a point where they could make their dreams come true.

Imagination simply can set us targets which may look hard or impossible to reach but we shouldn’t forget that not long ago, no body could believe that some day, we may be able to collect samples and take pictures from the surface of the Mars or travel around the world in less than one day.

Maybe someday, we figure out how to travel through time or create intelligent robots (with the help of Artificial Intelligence) and I am anxiously waiting hoping that it happens while I am alive and of course I will do my best to participate in our afford to make these dreams come true.

Imagine how it would be to travel from your house to your friend’s house through a portal which connects your houses together, similar to a phone line, by transforming your body into energy and transferring it to your friend's place! That can be a good target isn't it?