Throughout the movie, there are instances where Blinkin does things like he can see. Such as when Robin cut's the saddle from the horse, causing a guy t hang from it sideways, after picking on him, Blinkin laughs with everone else, like he saw the whole thing. And when they are told to "go around the back way" to get to Robin during the archer competition, he looks towards the "other way" with everyone else.