The Necker cube illustrates how the eye can reach two conclusions. Each of the two squares in the Necker cube can be perceived as either the front or the rear surface of the cube. Try to make the cube switch back and forth between these two orientations. Now try to hold one orientation. Most people cannot maintain the whole cube in consciousness for longer than three seconds; it seems to flip from one orientation to another.
The cube appears to flip between orientations because the brain develops two equally plausible hypotheses and cannot decide between them. When attempting to hold one orientation of a cube in consciousness, it is common for most people to struggle with maintaining focus for more than three seconds. This is because the brain is presented with two equally plausible hypotheses and cannot decide between them. As a result, the cube appears to flip between orientations.
However, with practice and training, it is possible to improve one’s ability to maintain focus on a single orientation for longer periods. This can be achieved through various techniques, such as visualization exercises and meditation practices, that help strengthen the brain’s ability to concentrate on a specific task or object. By consistently practising these techniques, individuals can improve their cognitive abilities and overall mental acuity, allowing them to better handle complex tasks and situations in their daily lives.
The Necker Cube protects against common sense realism, which states that the way we perceive the world is the way the world actually is.