Looking down into the parking lot, a woman notices an odd table, but after her hubby investigates, they discover it is just ...

If you saw the movie Inception (we highly recommend you do) you will remember the infinite stair puzzle that is exposed as an optical illusion. [David’s] proposed method for debunking this hoax ...

The effect is like the famous Escher staircase which appears to be ... that gently gets louder and fades in. This creates the illusion that the sound is always rising in pitch.

The distinction between reality and perception is blurred by brainteasers, optical illusions, and Escher's inconceivable ...