Can you see the word ?life? in this chequered black and white image? Does the word act strangely?
We can distinguish ?Life? from the background of black and white because it is outlined with a black line. When we focus on it, however, it seems to break apart. The lines do not make complete letters and our brains cannot cope with these strange interruptions.
Optical illusions like this can trick our minds because of the graphic styles and use of black and white. If we move our heads to the left or right of the image, the letters repair themselves.
Archive of illusions.org: