ArtArt originally was the processes of man, and as such was synonymous with science. Nowadays it is in essence the foremost expression of human creativity. As difficult to define as it is to evaluate, given that each individual artist chooses the rules and parameters that guide her work, it can still be said that art is the process and the product of choosing a medium, a set of rules for the use of that medium, and a set of values that determine what deserves to be expressed through that medium, in order to convey either a belief, an idea, a sensation, or a feeling in the most effective way possible for that medium. Opinions differ as to what can and cannot be defined as art; for example, can somebody make art if the creation was not intended to be art? Is art always a form of individual expression? Will a work of art only be art once it is finished? For a more in-depth discussion of these questions, see the article on the definition of art and read some quotations about art. Types of art There are many types of art; the history of art reaches back into prehistoric times. Today, art most often refers to the visual arts, specifically painting and sculpture, and photography. Art also commonly refers to the fine arts, which include music, literature, poetry, dance, and the theater. An outgrowth of the theater is film and animation, and more recently, multimedia. When something is done especially well, it can be considered art: a feat of engineering such as the Golden Gate Bridge can be seen as a work of art. Architecture is certainly a type of art: consider the Eiffel Tower or the Notre Dame cathedral. Even computer programming can be art; some people create poems in their favorite programming language. Art doesn't have to be solely for aesthetic purposes; arts and crafts deals with making useful things into art. Commercial art ("visual communication") uses artistic methods to convey information such as advertising. Sometimes people make art out of random objects that weren't intended to be art; such art is called found art.