(3.2.12) Trickey : One of the most striking features of Table 2 is what is not there. Except for band gaps, there is nothing about solids, no cohesive energies, no bulk moduli, no crystalline phase-transition pressures. (We here assume that "bond lengths" can be interpreted generously as including lattice constants.) With the disclaimer that what follow are simply values that seem to be fitting from experience but not from study, plausible useful accuracy values seem to be 0.015 Å for cell constants, about 0.1 eV/atom for cohesive energies, ±4% for bulk moduli, and ±2% for transition pressures (assuming the crystal structures are correct). The main point is that work is needed on such criteria.