law of identity and law of causality

law of identity applied to action is the view of the atheist 

regularity in nature because of the nature of objects 

but: 

It is a tremendous mistake to assimilate both laws !

To think that objects have a determinant nature and that is why they 

behave as they do is simply incorrect. The law of identity prevents them from changing !

how is it possible to extropolate the future then ? how is past mutation 

possible ?