An invasion of privacy, a waste of energy and dollars, and a serious health threat.

There's a wonderful optical illusion which involves a graphic of a ballerina spinning around on one leg. It's called:

"The Spinning Silhouette Optical Illusion"

This illusion elucidates a very important principle concerning subjective reality, and helps to illustrate a point about the vastly differing views people can hold about events such as 9/11. Some people who look at the spinning figure will…