Finite-(electronic)-temperature Kohn-Sham DFT, even with standard GGA or hybrid DFAs, can be used routinely to approximately describe difficult static-correlation problems in large systems even if the resulting energies need to be taken with caution. Such calculations often improve SCF convergence and can be employed, for example, in a moleculardynamics treatment of high-energy chemistry (mass spectrometry 451 ) or for the analysis of static-correlation effects 452 .