Reading
https://docs.authzed.com/guides/schema may I suggest that:
> In Authzed, such a question is answered via use of a CheckPermission call, which takes in two objects (the resource and the subject), as well as a possible permission (or relation) between them (the permission), and returns whether the subject is reachable from the resource.
should probably read:
> "[...] and returns whether the resource is reachable from the subject."