What are features of a good theory?

A good theory should be logically coherent, offering clear explanations that connect observations and facts in a consistent manner. It should be testable and falsifiable, allowing predictions to be made and empirical evidence to be gathered for validation or refutation. Additionally, a robust theory should be comprehensive, encompassing a wide range of phenomena, and simple, adhering to the principle of parsimony by not introducing unnecessary complexities. Finally, a good theory should be adaptable, able to integrate new findings and evolve as new evidence emerges.