I do believe that a picture (photo or image) tells a story or stories.
There is a quote that say that a picture is worth a thousand words.
And I am a true believer of that quote.
In my presentation, when I teach, I always put a picture or photo or image that have a story linking to what I teach.
I do really care about putting the right picture or photo or image.
I won't put (even in my dreams) a single picture or photo or image that has nothing to do with what I teach about.

See the video below and you will understand what I am talking about.