> Oh, my kingdom for atomic, history-recording (and replayable) object states! You might want to check out John McCarthy's Elephant and its follow-ons. http://

> Oh, my kingdom for atomic, history-recording (and replayable) object states! You might want to check out John McCarthy's Elephant and its follow-ons. http://web.archive.org/web/20130729203501id_/http://itc.conversationsnetwork.org/shows/detail3770.html http://web.archive.org/web/20130729203501id_/http://itc.conv... Its not exactly what you want, but it is down that road.