From the post: > The fountain is required for wishes. The wall is required to be able to offset the random state without advancing the game state – every time

From the post: > The fountain is required for wishes. The wall is required to be able to offset the random state without advancing the game state – every time the character attempts to walk into a wall, it calls random() without wasting any in-game time. From the fountain, the bot ascends completely on her own.