Premise: If faculty members are tenured, then they are very politically conservative.
Premise: Our better teachers are not tenured.
Conclusion: Therefore, our better teachers are not conservative.
Explanation: This is an antecedent fallacy. The arguer fails to recognize that being tenured is not the only reason that make a person conservative. However, by denying that better teachers are tenured and then concluding that they are not conservative, the arguer wrongly assumes that being tenured is necessary for being conservative, that is, the only thing that would make someone conservative.
