Introduction
When we consider the validity of a conclusion, we should never reason in a vacuum. In fact, many times during the course of debate, we may lose a debate simply because we have not thought outside of the box that our opponent has drawn for us. Therefore, it is paramount to always think of other possibilties to match the facts of a particular question without conceding an opponent's conclusion. The fallacy of false alternative occurs when we do not consider all of the relevant possibilities.
Definition
The fallacy which seeks to exclude other valid possibilities which account for the facts of a proposition.
Illustrations
Argument #1: Which system of government works the best: Capitalism, Communism, or Socialism?
Argument #2: Do you believe that you are saved by faith or by works?
Diagnosis
As with other fallacies of logical structure, this particular fallacy can either be explicit or implicit. The implied ones are obviously much harder to pick out and expose because, many times, the alternatives underlying them are simply assumed and recognized to be the only ones. The False Alternative is a fallacy which even the seasoned apologist has to be on guard against since it is easy to accept. The very first question one should ask about the alternatives presented should be: "Are there any other options here."
Antidote
The best defense against this kind of fallacy is to develop an open mind and foster a good imagination. The wider your mind, the less effective this fallacy will be against you. This probably explains why so many in our culture today fall for this fallacy so much - small minds accept false alternatives.
John Pacheco
The Catholic Legate
May 23, 2003