The discussion centers on the incorrect construction of a homemade capacitor, where additional unconnected plates are mistakenly added inside, leading to reduced capacitance. It is emphasized that spacing the outer plates further apart decreases capacitance, contrary to the intended design. To create an effective multilayered capacitor, the plates should be connected properly, ensuring they form two large plates separated by a dielectric material. The participants acknowledge the learning process involved in understanding capacitor construction. Overall, the conversation highlights the importance of proper design in capacitor assembly to achieve desired electrical properties.