As an example, let us focus on the issue of the valid questions. For instance, when studying a chemical reaction, the fundamental (and sometimes the only) question to formulate is how the chemical bonds are reshuffled during the reaction. If we do not have chemical bonds, would that question make sense? What question would we ask then? How is phlogiston released? How does the water:air:earth:fire ratio change? Every question about structure, reactivity, nanochemistry, analytical chemistry, DNA, organometallics, the ozone layer, IR spectroscopy, or astrochemistry only makes sense in terms of having bonds, which give us the language to describe chemistry. Is there a chemical field where the chemical bond is not its obvious starting point? Chemistry students are usually not aware of the weight of this chemical paradigm, and how much it affects the whole building of their studies. It is a good practice to start examining this concept in both introduction to chemistry and in advanced quantum chemistry courses.