If rules alone were enough none of these would matter. "Lack of absorptive capacity" means that the necessary background knowledge to understand and value the rule is missing. Causal ambiguity means insufficient knowledge of how the rules relate to outcomes.
The point of having and following rules is to be able to do things without thinking. It's really good to be able to do things without having to think about them. It's really bad to not be able to know when you have to switch gears and think about them, though.
Or, less long-windedly, "having rules for how to do things doesn't free you from having to know what you're doing."
