Causal physical laws—classical and quantum purposeful actions

“More is Different” (MiD) is one of the most influential scientific and philosophical viewpoints during the last six decades, highlighting the limitations of the reductionist approach in describing complex macroscopic systems. However, a recent study in informatics has demonstrated that classical spin systems obey “More is The Same” (MiTS), whereas MiD is associated with deep learning. This study shows that, from an informatics viewpoint, MiTS is also attributed to quantum systems in which quantum computational tasks obey MiD. This suggests a more general principle of informatics, where systems governed by causal physical laws obey MiTS, where purposeful tasks demanding vitalism adhere to MiD. According to causal laws, the current system state is derived deterministically or probabilistically from its past, whereas the current action in purposeful tasks is selected to achieve a future goal. The hypothesis that vitalism demands learning and asymmetric connections is also discussed.