Why can't you see the cabinet surrounding a TV in a dark room?

In a dark room, the contrast between the cabinet and the surrounding environment is reduced, making it harder for the eyes to distinguish the edges and details of the cabinet. The lack of light diminishes visual perception, causing objects that are not illuminated to blend into the background. Additionally, if the TV is on, its light can create a focal point that draws attention away from the darker cabinet, further obscuring it.