David Kelley earned his PhD in philosophy from Princeton University. He has taught at Vassar College and Brandeis University, and written extensively in epistemology and other fields. Debby Hutchins earned her PhD in philosophy from Boston College and has taught at Texas A&M University, Boston College, Fitchburg State College, and Gonzaga University. She has received numerous awards for teaching logic and her research focuses on the application of cognitive science to logic pedagogy. She currently teaches at South Texas College in Weslaco, Texas.