Calling for a Unified Redefinition of "Borderlineness": Commentary on Gunderson et al.

This commentary critically evaluates the usefulness of the standards employed by Gunderson et al. (2018) for theory evaluation and comparison and calls into question their adequacy, based both on the lack of scientific evidence supporting the assertions these standards imply and on the availability of alternative standard for theory evaluation and comparison. In so doing, the commentary calls for a redefinition of "borderlineness" as well as the use of standard criteria for theory evaluation and comparison.