 The study of cup rates has revealed some interesting properties, such as the power-law behavior of their optical conductivity. The authors of this paper have found that the power-law exponent is smaller than one, which is different from what was expected. They also demonstrated that the resistivity and optical conductivity are linearly dependent on temperature and frequency respectively. Furthermore, they showed that AT, linear scaling ansatz for the inelastic scattering rate leads to a unified theoretical description of the experimental data, including the power-law of the optical conductivity. This theoretical framework provides new opportunities for describing the unique properties of quantum critical matter. This article was authored by Bastian Michen, Christoph Berthold, Karl Wilhelm Rischau, and others.