The discussion revolves around a technique for enhancing night vision by temporarily covering one eye, which some participants find amusing yet familiar. It highlights the concept of dark adaptation, where one eye adjusts to darkness while the other remains uncovered, potentially improving night vision. Participants question the uniqueness of this method compared to simply sitting in a dark room, noting that the perception of darkness may be skewed. There is a humorous tone regarding the potential discomfort of the technique, with some contributors reflecting on their past experiences learning similar tricks. Overall, the conversation blends nostalgia with skepticism about the effectiveness of the method.