(2.2.11) Baerends : I would like to endorse the statement in contribution (2.2.10) that Kohn-Sham eigenvalues are not (should not be) supposed to provide band gaps. The fact that in solids the Kohn-Sham band gap is not equal to (or close to) the fundamental gap I -A is extremely frequently cited as the (notorious, infamous,. . . ) band-gap problem. But it is a problem of wrong expectations.