Actually, the truth is that proper logical analysis does not compel agreement anymore than Butch's first approach. Many people find it tiresome and offensive, but logic doesn't concern itself with things like that. Consistency and Deductive Implication Logical consistency is essential to good reasoning, but it is by no means sufficient. Completely invalid reasoning will be logically consistent if the statements simply have nothing to do with each other. For example the following argument 1.
Some dogs have fleas.
Therefore I want a Reese's Peanut Butter Cup. is logically consistent. So, like deductive implication, the fact that an argument is logically consistent isn't always interesting. The concept of contradiction does, however, give us an interesting way of defining the idea of deductive implication. Another way of saying this is that a logical contradiction arises when we assume that the premises are true but the conclusion is false. Melvin is a philosopher.