a process of thought that determines certainty
Deduction is the process of thought that arrives at a determination of what is by limiting out all that cannot be. It has been said, "When you have ruled out the impossible, whatever is left, no matter how improbable, must be true." The characteristic representing Deduction will arrive at conclusions by eliminating all competing theories that have holes until only one remains. This is fine for cutting away the nonsense and discovering understanding, unless the competing theories were not all the available theories and the real answer was never even considered. Also, Deduction often fails to look for situations in which alternative truths exist. A famous story had a detective narrowing down murder suspects only to discover that they all did it!
syn. drawing a conclusion, process of elimination, demonstrative reasoning, narrowing to a single point