 Like occasionalism, the theory of parallelism holds that there is no intersubstantial causation among finite substances. And like occasionalism, when the strings of Hendrix’s guitar vibrate, Hendrix is not the real cause of the vibration. Nor, again, are his fingers, wrist, or arm real causes. Nevertheless, it is not God who is the total real cause of this vibration. According to parallelism, finite substances can be real causes. Rather the strings themselves are causing themselves to vibrate. Due to the special harmony between mind and body and not because of any direct causal relation, when Hendrix is in a state of willing his fingers to strum the strings on his guitar, the strings are in a physical state that would result in their vibration.