 One of the exciting features of SDIC is that there is no lower limit on just how small some change or perturbation can be—the smallest of effects will eventually be amplified up affecting the behavior of any system exhibiting SDIC. A number of authors have argued that chaos through SDIC opens a door for quantum mechanics to “infect” chaotic classical mechanics systems (e.g., Hobbs 1991; Barone et al. 1993; Kellert 1993; Bishop 2008). [7]  The essential point is that the nature of particular kinds of nonlinear dynamics—those which exhibit stretching and folding (confinement) of trajectories, where there are no trajectory crossings, and which exhibit aperiodic orbits—apparently open the door for quantum effects to change the behavior of chaotic macroscopic systems. The central argument runs as follows and is known as the sensitive dependence argument (SD argument for short): 