Finally, one should note that one could make use of other deviation measures instead of relying on the root-mean-square deviation (RMSD) . It is for example common to report the mean absolute error (MAE). However, the latter will give the smallest error estimates, as it tends to lessen the weight of outliers. Given that we are critically assessing the predictive power of computational protocols, a measure like RMSD seems a more natural choice. For fairness, we will also consider results when removing the largest outliers of each set, trying to set an equal footing for all submissions, whether complete or incomplete.