Over the years rhetoric has become more complex. Rhetoric is also more directly connected to the manipulation of language. In cyberspace we can't rely on the pitch and resonance of our voices, the warmth of our facial expression, the impressives stature of our bodies and the expense of our wardrobe to convince people to believe us. We have to convince with the speed, frequency and prevalence of our messages and the hypnotic, timely and informative nature of our web sites. The following is based on the book With Good Reason by S. Morris Engel.
All men are mortal.
Socrates is a man. Therefore, Socrates is mortal. All the candies in that bag are chocolate. Therefore, these candies are chocolate. There are often fallacies in inductive syllogisms because that second clause cannot always be proven.