Start now. Prove the value of Rules.

Sales processes have to accommodate change.  New products are introduced and existing products need modification.  Regulations mandate business changes.  Business policies regarding underwriting decisions are in constant need of refinement.  The pace of change and the competitive pressures continue to escalate.  It can be overwhelming.
Business Rules automate key processes with extreme agility so you can master change, drive down customer acquisition costs and make the right decisions.

Same basic skydiver rules with a simple data model but illustrates how additional rulesheets can record meta data about rule changes and how the rules can identify any that didn't fire. It also illustrates how you can have multiple rulesets open in Studio when they share the same vocabulary - in this example there are three different versions of the skydiver ruleset.

This example uses the minimal skydiver rules to determine risk, but has some extra rulesheets showing more rules with more complex conditions and an example of a rulesheet that validates the incoming data. It also has a more complex data model where the Applicant may have multiple Policies, and Policies may have multiple Beneficiaries. It includes an example of how you can model a rule that verifies that the beneficiary designation percentages add up to 100%.

This is a good place to start learning abut rule modeling.
This is the basic example illustrated in the online video demo which you can view here:
http://www.corticon.com/Demo/Corticon-BRMS-Enterprise-Demos/Modeling/Cor...
It models the following two seemingly simple rules
Applicants who skydive are high risk
Applicants under 35 have low risk

In Which a Decision Service Evaluates a few Transactions using Proposed Rules (The Challenger Rulesheet) while most of the Transactions go through the Current Rules (The Champion Rulesheet). This simple example illustrates the technique using the rules from the Skydiver introductory example. Also see the other Champion Challenger example which involves scorecards and calculation of  statistics.