Ethan: Damn! I teach EFL out here in Brazil and you bring out the grammar. I naturally assumed from the context of the discussion that using the passive voice in this instance, the agent would be a given as anybody who is interested in changing the system. Also, I was trying to give the impression that the "system" should be changed radically and quickly. Working within it has not really brought about any significant results. Sigh! Maybe I should have been born at another time.