A-level Critical Thinking/Deductive and Inductive reasoning
In a deductive the conclusion is deductively valid. If the conclusion is not guaranteed to follow from the reasons then the argument is invalid and the argument ceases to be a deductive reasoning.
Inductive arguments: Where is the reasons are true then the conclusion will probably be true. (Chelsea are 12pts ahead in the Premiership with only a few games to go it its likely that they will win the league).
In a strong argument reasons are only relevant if they make a difference to the conclusion.
Deductive reasoning: There the conclusion is guaranteed to follow from the reasons.
Inductive reasoning: If the reasons are true then it is likely that the conclusion is true.
Often there s a lot of evidence in arguments to support reasons which support conclusion.