Chaos Banking is a rather obscure conspiracy that is not often talked about. However it can be found in 9/11 conspiracy circles. It's often inspired by karmic debt theories and other pseudo-scientific claims. The theory asserts that tragic events in our timeline are stored as "negative energy" that is stored and drawn into a metaphysical, "bank". This energy can be used for other future tragic events. Basically, its a rather complex theory that is very hard to explain, however for those whom are interested look into, "9/11 was a mass ritual".