We provide several metric universality results. For certain classes $\mathcal C$ of metric spaces we exhibit families $(M_i, d_i)_{i\in I}$ which have the property that a space $(X,d_X)$ in is coarsely, resp. Li

We present an argument reinterpreting the generalized uncertainty principle (GUP) and its associated minimal length as effective variation of Planck constant ($\hbar$), complementing Dirac's large number hypothesis varying $G$. argue that charge radii (i.e. a scattering process) hadrons/nuclei along with their corresponding masses support existence $\hbar$. This suggests universality in measure...