One of the things that a writer needs most is the skill to transform the imaginings that tumble around in the head into something concrete, like a story so well structured that other people can understand what the words convey.. The result can be powerful in both emotional and mental terms, it can draw a reader into wanting to know more about the topic, or it can be dismissed as too tough to read or is not written well enough.
This interpretation of an idea into something solid is not of course restricted to writers. Inventors need a great deal of imagination. In their minds they conjure up an idea, whether that be how to build a bridge, or use the power of steam to drive a train, or how to enable words typed into a platform to be transmitted around the world, via space. And what of those people who imagined they could send a man to the moon. Then what of the people who transferred that concept into practicality.
It is the fortunate disposition of humans that over time evolution increased our capacity to imagine and so prove ourselves to become the most prolific animal on earth, as well as the most wonderful yet dangerous of creatures. So imagination can be used for good or for bad, depending on the interpretation.
I set myself a task. It is one you can perform.I wrote a few sentences as the opening to a story.
"The way he talked it was obvious there was not much in the top paddock. Not that it mattered for the job he was applying for. A wounded wombat could do it. Still, he was the only one who applied, which was strange, considering."
The task is to now imagine where that story can be taken. There must be a dozen, maybe even three dozen, stories that can sprout from this simple imagined scenario. SO GO FOR IT. Just write a few hundred, or a few thousand words, to complete a story. Every person would come up with a different one. Such is the power of the imagination. It is brilliant.