What Makes Red Cyan Glasses Useful for Simple 3D Demonstrations?

https://eclipseviewing.sagecurrent.com/posts/a-beginner-s-guide-to-circular-polarization-in-3d-eyewear

What Makes Red Cyan Glasses Useful for Simple 3D Demonstrations? is easier to understand when the viewing goal is clear. Red cyan glasses are only one part of the full experience. The setting, fit, storage, and user steps also matter