1、There exist similarities and differences between unauthorized agency in a narrow sense and agency by estoppels.
2、With regard to the theory of unauthorized agency, most of scholars argue that unauthorized agency in narrow sense has no appearance of right of agency, and the fault of principal is not the essential elements of agency by estoppel.
3、Regarding prima facie agency as authorized agency has some drawbacks, although it has the same results as authorized agency. It is more rational to regard prima facie agency as unauthorized agency.
