Sinnott-Armstrong is Chauncey Stillman Professor of Practical Ethics in the Department of Philosophy and the Kenan Institute for Ethics at Duke University, co-instructor of the Coursera online course ...

Formal logic helps us build and evaluate rational arguments, which helps us to test claims, explain our reasoning, and keep discussions clear. The first step in learning formal logic is learning about ...

You’re in the middle of a heated discussion–or fine, let’s just call it an argument–and the person whom you’re trying convince seems unable or unwilling to grasp your point of view. What should you do ...