I don't really understand some points such as :
a) business people needs to understand business very well, or;
b) disagreement on business people don't need to know the rule.
For me, as a people just touching BRE， the benefit of BRE is so called to let system adapt to business change, hence it's focused on adaptive of change.
Does it matter if the rule set up at time x is different from the rule set up at time y because of:
a) business people don't understand business, or;
b) business people don't understand rules?
