I want to know the answer to the following question:
What is the third and lesser referred to approach on defining the rule of law?
All the background I'm provided with is that "Among modern legal theorists, one finds that at least two principal conceptions of the rule of law can be identified: a formalist or "thin" definition, and a substantive or "thick" definition; one occasionally encounters a third "functional" conception.". Is that enough to answer the question?
Answer: yes