No experience is required using Adobe Photoshop or Illustrator, although much proficiency will be required by the end of the semester. . This is, however, an art course. The two subjects will dynamically switch between these roles during the course of their communication session, but these two roles at least will always be there. If not, there cannot be any communicating going on. Now, the extent to which the two parties interact is not objectively measurable at all.
Communication is an exchange of information.
To an objective observer, two people may appear to be exchanging information if they are using expressive body gestures, if the tone of their voices vary dramatically, and if they come away from the interchange with some expression on their faces. But the best judges of how much information has been exhanged in an interchange are the actual participants. If you come away from a conversation feeling baffled and more confused than when you went into it, chances are you won't feel that much communication occurred. Hence, your grade in this course will be somewhat determined by your classmates' subjective evaluations of the communicative power of your work. Hence, again, the necessity for you to actively participate in class discussions, so that you may help determine the effectiveness of your classmates' projects.