1. 1Department of Geological Sciences, Brigham Young University, Provo, UT84602
2. 2barry_bickmore@byu.edu
3. 3Department of Instructional Psychology and Technology, Brigham Young University, Provo, UT 84602; kirsten_thompson@byu.edu
4. 4Department of Philosophy, Brigham Young University, Provo, UT 84602; david_grandy@byu.edu
5. 5teagan_3@msn.com