cognition. The notion of "uptake" is also integral to RGS scholars' understanding of genre. Anne Freadman uses uptake to describe the ways in which genres interact with each other in her articles "Uptake" and "Anyone for Tennis?". She uses the game of tennis to explain the ways genres, as typified actions, are "taken up" by writers (tennis players). Tennis players, she says, do not exchange tennis balls, they exchange shots. Each shot only has meaning within the game, its rules, and the context of the game being played. Shots are meaningful because they take place in a game. The game is meaningful because it takes place within "ceremonials." Thus, the final at Wimbledon provides a different context than a game between friends. Genres are the games that take place within ceremonials, and shots are utterances, or verbal exchanges. We cannot really understand a text without understanding the ceremonial in which it occurs. "Uptake" is the illocutionary response elicited by particular situations. A number of different scholars have proposed terms that highlight the different ways genres may be related to each other. Amy Devitt initially proposed “genre sets” as those genres produced by an individual actor, carrying out that person's various roles, as part of the person's role set. Bazerman proposed “genre systems” to indicate the systematic unfolding of genres in an activity setting. John Swales proposed a similar term, “genre sequences.” Clay Spinuzzi, with his term “genre ecologies,” emphasized a more open set of genre options in a setting. Vijay Bhatia proposed “genre colonies” to note how genres move from one activity system to another to create new clusters of genres. For instance, if we were to take a courtroom as an activity system, the judge's genre set could be defined as only those genres used by the judge, while all the communications produced by all the witnesses, lawyers, and other court officers would be included within the genre system, and the regularized series of utterances from judge to lawyers to witnesses could be identified as a genre sequence. The total range of kinds of utterances in the court would form a genre ecology, and the introduction of technical discourses through, for example, the testimony of expert witnesses could indicate the colonization of genres from one domain to another. Bazerman, in a more complex example, studied the history and workings of the multiple activity systems and their associated genres that