[incomethax]

I can attest to that. We have two main "sides" of our app, one side that allows for editing of rules and another that just applies those rules on transactions. It took us much longer to build the editing side than than the transaction side, and when we hit users, we found out that they didn't even WANT to edit the rules. That was more than half of our app that users weren't using, even though in initial mockups/user tests they indicated that they would edit the rules.