(5.4.5) Grimme : The title of this paper contains the word "workhorse" and hence we should not forget to teach this aspect -that DFT really works every day in thousands of applications. DFT is a theory that is generally robust but students should also know when it fails (rarely) and why and how this is related to the DFAs (and other) approximations involved. Therefore, it is especially important to teach the basics of DFT in the context of realworld applications to illustrate that scientists are able to use it as a versatile tool to solve chemical and physical problems through many disciplines. The perception of DFT as a valuable component of today's fundamental chemistry-physics method toolbox should be promoted accordingly, through practicals and lectures with a pronounced hands-on mentality.