I was driving my old car that vibrates a lot. At the red light, I was reading a magazine which showed a text with a rectangular object in the graphics.
Strangely, I did not notice that the text was vibrating a lot. However, the vibration of the rectangular object was very visible.
I believe that it is one of those psychological illusions, probably due to the defined edges of the polygon which the eyes perceive more than the text.
