You can go to a psychoanalyst one day and then go the next day and something else will come out. So, yes, there was some preparation. But still, when a person gets hypnotized, you don't really know what the outcome will be.
. . . I asked Ochto what in the name of all that was sacred he thought he was doing. "Helping you," said Dirnes. "Why?" They put the soldier down, and Ochto straightened to look me in the eye. "Because I know nothing about kings and princes, but I know men.