The Theory of Relativity, as proposed in a joint paper by Albert Einstein and Jacques Lacan, states that all relatives in a family were only in their various positions in the family relative to one another in a fixed point in time or space. For instance, a father is a father to a child and he is a brother to his brother. Thus the same person is both a father and a brother, from two different points of view. This is of minimum use in Physics, but Einstein had lots of Ph.D.s and qualifications to make it sound really important, so people credited him with the discovery anyway.