As an educator, I am always pondering my teaching methods and questioning whether they are adequate for my students' growth. I have recently revisited Karl Llewellyn's " The Bramble Bush ", a book that had a profound impact on my intellectual and academic development. In the very first pages, Llewellyn demystifies the legend that the study of law is (or could be) limited to learning the rules. His words made me consider my own teaching, and how much of it is reliant on the shortcut of simply paraphrasing the rules. While teaching jurisprudence, I can easily avoid using specific provisions, except for rudimentary examples when necessary, and prioritize instead instilling the underlying principles in my students. Similarly, when it comes to teaching investment law, I have found that focusing on specific treaty rules may prove futile. Although the rules may be virtually the same across different treaties, the diversity in their interpretation by tribunals renders them un...