Aver: (transitive verb)
1.To affirm with confidence; to declare in a positive manner, as in confidence of asserting the truth.
2.(Law) To assert, claim, or declare as a fact.
Art is not only an object to look at, but most of the time it contains some kind of message that engage the viewer to think about. For example, the series of shots at the Trash Batch from a photographer names Chris Jordan gave the viewer a wake up call on what's going on in our world. The images in his show are haunting and apparently uneasy to look at, but it keeps the viewers interests for a long time and keep them think about the artist's main object being the bird's decomposing body revealing its stomach full of trash and all kind dirty everyday objects.