Sometimes even obvious things can prove to be difficult to state in words. Bringing across a feeling, a snapshot of the future or even a vision. Without images it can be hard to understand exactly what is being said.
Just figure how many small images you use on a daily basis to provide some context to your text. As communication is becoming increasingly binary even in our basic messages we can’t do without emoticons.

We need images, and here we use them to state the obvious, such as rising sea levels due to global warming, with art.