Not with Coda, but I've used a lot of commercial implementations (ILog, Fair Isaac, Experian) and been pretty impressed. One of the biggest problems I encounte

Not with Coda, but I've used a lot of commercial implementations (ILog, Fair Isaac, Experian) and been pretty impressed. One of the biggest problems I encountered was testing and change control. With the rules engine you could suddenly change and manipulate things (sometimes on the fly) - that didn't mean that you should....