Logical Fallacies

Avoid these common logical flaws in constructing your argument.

Post Hoc Ergo Procter Hoc -- "After this, therefore, because of this" -- Confuses cause and effect.  A present observable effect is blamed on something that happened in the past with no other evidence than that one thing happened first.

My best friend married a Muslim, and since then, terrorist attacks on US targets have increased.  Obviously, this type of interfaith relationship is very destructive.

A few year ago, when owners of radio stations began playing more violent music, Notorious B.I.G. and 2pak Sakur were shot and killed.

Overgeneration -- implies that something is always or never true.
No Americans truly understand the Islamic faith.

Terrorists truly believe that their actions are directed and approved by God.

Proof by example -- For this fallacy to be at work, a specific example must be provided and must be used as "proof" that the author's argument is correct.  Examples illustrate, clarify, add life and pathos to an argument, but they do not prove.
Islam is a violent religion; just look at what the terrorists did to the World Trade Center in NYC.
Argument Ad Homimen -- "Against the Person" -- attacks the character of a specific purpose rather than addressing the issue at hand.
This war on terrorism is a travesty motivated by blood lust; George W. Bush just likes to kill people; look at how many people were executed when he was governor of Texas.

History is an irrelevant subject; my history teacher is a complete idiot.

Argument to the People -- Implies that all members of a specific group must feel the same way.
Patriotic Americans support the war against terrorism.

True Christians abhor all types of violence and would never participant in the military.

Red Herring -- sidetracks the issue by raising a second irrelevant topic.
Why are we focusing on a war on terrorism when the crime rate by our own citizens is still so high.

This morning I got hassled by police for riding my bike on the sidewalk, and there is a rapist loose on campus.  Does anybody else see a problem with this?