[Vladislav wrote](https://forum.azimuthproject.org/discussion/comment/16120/#Comment_16120):

> In Borrower-Lender business relation. Same thing. There are some borrowers and lenders that can be represented as B1
Is this really a preorder? If you borrow from me and I borrow from Brendan, does that mean you borrow from Brendan? I suppose this could be true in _some_ sense, but do you owe money to Brendan?

This made me realize it's very good to find examples of relations that _seem like they might be preorders but aren't_. Well-chosen counterexamples are often just as revealing as examples, since they indicate the _limits_ of a concept.