Double, Double, Toil and Trouble Double, Double, Toil and Trouble Double, Double, Toil and Trouble is a 1993 Halloween made-for-television children's film. It stars Mary-Kate and Ashley Olsen as two adventurous little girls who discover that their Great Aunt Sophia has been trapped and cursed by her evil twin sister Agatha. On the 7th year of her imprisonment, Sophia will be doomed to the netherworld unless the curse is broken by the magical spell of twins. The film's title is part of the famous line spoken by the three witches in Shakespeare's Macbeth (Act IV, Scene I): "Double, double toil and trouble; Fire burn and
Economic bubble of the bubble collapse can only be forecast probabilistically and the bubble process is often modelled using a Markov switching model. Similar explanations suggest that bubbles might ultimately be caused by processes of price coordination. More recent theories of asset bubble formation suggest that these events are sociologically driven. For instance, explanations have focused on emerging social norms and the role that culturally-situated stories or narratives play in these events. The term "bubble", in reference to financial crisis, originated in the 1711–1720 British South Sea Bubble, and originally referred to the companies themselves, and their inflated stock, rather than to