Reconfigurable Intelligent Surfaces (RIS) have emerged as a promising technology for beyond 5G systems, as they can collect wireless signals from transmitters and passively steer them towards receivers. However, there are several myths and exaggerated claims surrounding this technology. In this paper, we provide a neutral perspective on RIS technology by reviewing its fundamentals and clarifying its specific features. We also debunk three myths: 1) the current network technology can only control transmitters and receivers, not the environment; 2) RIS can achieve better asymptotic array gain than traditional arrays; 3) the path loss is the same as that of a perfect mirror. Additionally, we highlight two critical questions about RIS: 1) how to design and optimize RIS for different scenarios and applications; 2) how to integrate RIS with existing network infrastructure.