Manau, kad skrybėlė pasitarnavo tam tikram tikslui, ji parodė skaitytojams, kad Vatsonas kažko mokosi ir, nors jis gali būti ne toks protingas kaip Šerlokas Holmsas, jis tikrai gali išsilaikyti ir kad jis mokosi ir auga kaip charakterio raida.
i feel that the hat did serve some purpose it showed the readers that watson is learning something and while he might not be as smart as sherlock holmes he can definitely hold his own and that he is learning and growing as a character character development