Expectations´ Self-Fulfillment and Self-Destroying in Socio-Economic Systems

Expectations´ self-fulfillment and self-destroying co-exist in socio-economic systems, which makes the evolution of the systems seem to be mysterious to us. We regard these collective phenomenon arise from people´s ways to expect and act, namely, the expectation mode and action strategy, and propose a simple agent-based model in consideration of four direct combinations of general expectation modes and action strategies to detect the underlying mechanism. We find that the action strategy, or originally, the win-loss rule of the system, is indeed a crucial factor to determine whether the evolution of the systems would satisfy people´s expectations.