GP was confused about why the doubly linked list case was so important, so I enlightened, it's an example of an entire class of the borrow checker's problems.

GP was confused about why the doubly linked list case was so important, so I enlightened, it's an example of an entire class of the borrow checker's problems. Your response isn't really relevant in that context, and instead escalates to a much larger debate, so best I not engage. Appreciate the thought though =)