Pictures solidify messages. Science tells us that we forget most of what we read. (This doesn’t speak well to what you might remember about this blog, so be sure to come back and read it again.) We remember context. That could be the place you were when something happened. Smells. Visual elements of the world around you. The writing on the page.
The last time that you went to a bookstore (you have been to one recently, yes?), do you remember picking up a book because you liked its cover? Maybe a magazine’s front picture drew you in? These are images that recalled something in your mind. They caused you to have an emotion which made you lean in. If you opened the book, do you remember liking the text, the way it looked on the page? Or not?
These emotions related to what you see help you to remember the content as well. Without a connection between seeing something and an emotion, chances of you remembering it shrink drastically. Studies (and Edgar Dale’s Cone of Experience) show that 10% of people remember what they read but 90% of what they do.