 The central move of RQM is to interpret all physical variables as relational, namely as referring to two systems, not a single one, and to view them as realised only in interactions. Relationality has been playing an ever dominant role as our knowledge of the natural world has increased. Examples are the relational nature of velocity in classical mechanics, of locality in general relativity, of the potential in electromagnetism, of the gauge invariant observables in non-abelian gauge theories, and many others. RQM is a step further in this direction. Taken seriously, the philosophical implications of this overreaching relationally can be heavy. The main one is a weakening of a strong version of realism.