For the final blog we are looking at deductive and inductive arguments
Deductive arguments are arguments where the goal (to achieve valid
arguments) is to provide conclusive evidence for the conclusion - The nature of
the inferential claim is such that it is impossible for the premises to be true
and that conclusion false (Valid or Invalid)
Example:
Premises: All snails eat
lettuce
Premises: This thing is
a snail
Conclusion: This thing
eats lettuce
Inductive arguments are arguments where the goal (to achieve strong & reliable beliefs) is
to provide the best available evidence for the conclusion - The nature of the
inferential claim is such that it is unlikely that the premises are true and
the conclusion false (Strong or Weak)
Example:
Premise: This snail eats
lettuce
Premise: This snail eats
lettuce
Premise: This one too
etc
Conclusion: All snails
eat lettuce.
Article 1
A suspected terrorist has tried to kill a French soldier in a
copycat type attack to the murder of the serviceman in Woolwich a week earlier. Article by Peter Allen published in the daily
mail on May 26th 2013, 10:56am.
Inductive Reasoning:
Premise: 2 suspected radical Islamic
men stabbed a serviceman in the throat in a very public place in Woolwich,
London
Premise: a suspected radical Islamic
man stabbed a French soldier in the throat in a public place in Paris
Conclusion: Therefore the second attack was a copycat attack and was inspired by the
first attack.
The inductive reasoning utilised above would give rise to a valid yet weak argument.
Article 2
The attack of a serviceman in Woolwich has caused an increase
in anti-Muslim incidents. Article by the
Huffington Post UK published on May 25th 2013, 9:10am.
Deductive Reasoning:
Premise: The attack on the London
serviceman by suspected Islamic terrorists happened
Premise: State-funded helpline recorded
a huge increase in anti-Muslim incidents
Premise: 150 incidents over a 48 hour
period occurred; compared to the average 6 – 8 per day since attack
Conclusion: Therefore the murder of the serviceman by the suspected Islamic terrorist
has caused a spike in the number of anti-Muslim incidents occurring.
The deductive reasoning utilised
above would give rise to a valid conclusion.