The clear domain represents the "known knowns". This means that there are rules in place (or best practice), the situation is stable, and the relationship between cause and effect is clear: if you do X, expect Y. The advice in such a situation is to "sense–categorize–respond": establish the facts ("sense"), categorize, then respond by following the rule or applying best practice. Snowden and Boone (2007) offer the example of loan-payment processing.