the stuff of thought

In the beginning of this article I believed it was going to be about 9-11 but it turned out to be something much different. Yes 9-11 does relate to the real topic but only introduced on part of a bigger whole. The article goes into the idea of semantics, which is how words relate to behavior and how humans interpret them. One does not realize that the littlest difference in a sentence, down to one word can give a thought complete different meaning. It is said that words are "continually circular" each word is defined by words defined by others. Words can always be up to debate on what there true meaning is.