How does the glass on the ouija board automatically?

The glass on a Ouija board moves due to a phenomenon known as the ideomotor effect, where participants unconsciously exert small movements. When people place their fingers lightly on the glass, their subconscious thoughts and emotions can lead to tiny, involuntary movements, causing the glass to slide across the board. This effect is often enhanced by group dynamics, as participants may be influenced by each other's beliefs and expectations. Ultimately, the movement is not supernatural but rather a product of psychological and physical factors.