Benham Disc

General Semantics

Even with the reduced size and resolution of this short clip, you can probably see the intended effects. Watch the disc. Describe what you see … do you see shapes? Colors? As the rotation slows, do the shapes and colors change? How so? If others are watching at the same time … compare what you … Read on …

Count the Dots

General Semantics

For this exercise, all you have to do is count how many black dots you see. . . . . If you think you’ve experienced some kind of electronic perception manipulation, try printing the previous page, look at the graphic on paper, and see if you get similar results … What’s going on? David Hewson … Read on …