Not necessarily the form. What is interesting about the form of communication a given human community may use at any period in history is the significance it holds for those who observe that community. The form of communication tells us about the members of a community in a given period of time. The preponderance of image since the advent of the television symbolizes and helps us to understand the society that has emerged from the technological and economic expansion of the post-war period. One central theme of understanding which I've observed is the growth of image as a universal means of communication in an interconnected world.
Language requires rules and consensus about the shape or form of rules.
In order to communicate using language, human beings agree about the shape of the symbols which make up the textual form of a language, as well as to the sounds which when placed in a particular order convey meaning. The symbolic form of the language is exclusively learned, as anyone with a useless Arts degree can attest. The rules that make up the heart of a language are of course, exclusive, and discriminate by their very exclusivity. Image is universal. Image, therefore, imparts a common understanding to disparate understandings.