Sandbox experiments are a research methodology used in various fields, such as economics, psychology, and ecology, to study complex systems in a controlled environment. In these experiments, researchers create simplified models of real-world phenomena and manipulate variables to observe their effects on the system. Sandbox experiments allow researchers to study cause-and-effect relationships, test hypotheses, and gain insights into the behavior of systems without the limitations and constraints of real-world environments. They provide a way to explore and understand complex systems in a controlled setting, allowing researchers to make predictions and draw conclusions that can inform real-world decision-making. Overall, sandbox experiments are a valuable tool for researchers to study complex systems, test theories, and generate insights that can inform policy, practice, and further research in a variety of fields.