What is metaphor but a piece of fact, like a small suitcase, designed to transport an idea?

I am often struck by my mind’s ability to hold pictures. As I read I can feel my brain locking shut on the images. Movie titles that make a picture in my head are easier to recall than the others. Our current president has a gift for this. He told us the hacking of our election just might have been done by a four hundred pound person sitting on a bed . That picture and the very specificity of it it make it stick in our minds more compellingly than a bunch of faceless Russian digital hackers. Score one for the bad guys.