Types of Logic
Logic is the process of making reasons. It is important to distinguish this from making excuses or for attempting to explain something. It has three main forms: Deduction, Induction, and Abduction. These have varying levels of certainty and are useful in different circumstances. In all cases the argument (remember what I mean by this term) can either be well constructed with each step leading to the next or not well constructed with missing or incorrect connections between ideas. The measure of these to states is called Validity, which deals with the form of the argument. Invalid arguments are most often either incomplete or fallacies.
These three methods of reasoning are useful under differing circumstances and we should have at least a passing familiarity with all three. I am hoping that this basic guide will assist in differentiating the type of reasoning that is being used (if indeed reasons are being given). The evaluation of arguments is based partially on general knowledge and ability to apply these various forms at the appropriate times.
The Nature of Discourse and Argument series on this blog