Psychologically: Let you somebody 'about the blade jump', although you must calculate on the fact that it 'injures' him? Who dreams of it, puts through his own interests after 'razor-sharp considerations' strictly and aggressively. He does it 'without taking into consideration losses' and knows sympathy only from the hearing legend - here some process 'on the knife edge' happens. Popular: (pers).: A dirty or rusty blade warns the dreaming against neglecting his health. A sharp and clean blade promises to him that he finds out against expectation of a very difficult situation and hits from it still profit, or however, that a high-powered person will help him whom he can win, besides, as a friend. (See also knife)