Interferon receptor deficiency is a condition showing some amenability to genetic therapy. Incremental views are connected to more open beliefs and amenability during conflict resolutions. The amenability property has a large number of equivalent formulations. Mathematical rigour can be modelled as amenability to algorithmic proof checking. This limits its amenability to automated unit testing and encapsulating of behaviours for class extension. Amenability is related to the spectral problem of Laplacians.