Sound reasoning is one that is well-thought-out, reliable, logical, and convincing. The premises of the reasoning are valid such that the conclusion is a correct and convincing one.
Sound reasoning is not biased or subjective, rather it is very objective and based on facts. It is based on solid proof that can not be easily disputed. Sound reasoning could be deductive or inductive. Deductive moves from general to specific while Inductive reasoning moves from specific to general.
