Wednesday, 13 March 2013

Fallacies


Post Hoc:
This fallacy is based on the mistaken idea that simply because one event happens before another, then the first event causes the second event. “After this… therefore because of this…”
            - Look for different explanations
            - Is there sufficient proof or evidence to support the conclusion?
            - Consider the possibility of coincidence

 

Ad Hominem:
This is Latin for “against the man”. An argument that attempts to dismiss the argument by attacking the person who makes it.

 

Strawman:
The argument is misinterpreted by exaggerating, distorting or simplifying it; which in turn makes it weaker. This makes the argument easier to refute.
            - Arguments appear grossly exaggerated
            - It is usually obviously incorrect
            - Words like ‘ridiculous’ , ‘wild’, ‘ludicrous’ are used

 

Tu Quoque:
This is Latin for “you too”. The pattern of reasoning is that we should do something because someone else is doing it.

 

Sweeping Generalisation:
There is sufficient evidence for the generalisation that is being made. This can mainly be seen in representative samples.

 

Slippery Slope:
 The point being made suggests that once the first step is taken on s slippery slope, it leads, often inevitably to further steps and to increasingly undesirable consequences.

 

Confusing Necessary Condition:
Something must happen for something else to happen. This fallacy usually jumps to conclusions.

 

Confusing Sufficient Conditions: 
Something must happen for it to be certain that something else will happen. This fallacy usually jumps to conclusions.

 

Two Wrongs Don’t Make A Right:
This is justified by saying one bad action is on the basis of another bad action that is accepted. It is also known as “reasoning from wrong actions”.

 

False Dilemma:       
The argument is restricted and limited to the options that are available.

 

Inconsistency:
The claims being made within the argument contradict each other.

 

Circular Argument:
The reason and the conclusion are the same.