there is no consensus is that all of the above mentioned models have some fundamental short comings and/or work in different regimes. Further analysis of contact line slip models by @huh1977 showed that, even though stresses are not diverging anymore, the pressure still shows a weak singularity i.e. the pressure diverges, but becomes finite when integrated. While using a slip length model is sufficient from a modeling perspective, a divergent pressure cannot be right from a physics perspective. The precursor film on the other hand does successfully work around the contact line singularity for both viscous stresses and pressure. However, they are typically not seen under partial wetting conditions [@snoeijer2013]. The different models for microscopic and macroscopic contact angles have some limitations too. While a model which describes the contact angle as a function of the capillary number might describe dynamic contact angle hysteresis correctly, there is also static contact angle hysteresis, which causes contact line pinning of non-moving contact lines. Any model that lets the contact angle only depend on the local capillary number will not be able to capture static contact angle hysteresis. Assuming a static angle ,on the other hand, does not capture static contact angle hysteresis, 