Good summary of a discussion on the 'Serious Games' mailing list, and I like the way the conversation evolves. It begins with Clark Aldrich saying, "I am realizing that I don't have a good term for the 'interactive part' of a educational simulation/serious game" and continues with suggestions ranging from "gameplay" to "the Game." But then it takes a right turn with Kent Quirk observing, "This message just clarified for me what's been bothering me about this whole exercise: it's the attempt to legislate jargon... attempting to define a set of unambiguous terms for a very ambiguous environment." Right. And more - the jargon is intended to define a group, its thought leaders, and a domain of discourse. To build walls instead of bridges.