Mutatis Mutandis

Mutatis mutandis is a Latin phrase meaning "changing those things which need to be changed" or more simply " the necessary changes having been made".

The phrase carries the connotation that the reader should pay attention to the corresponding differences between the current statement and a previous one, although they are analogous. This term is used frequently in economics, philosophy, logic, and law, to parameterize a statement with a new term, or note the application of an implied, mutually understood set of changes. The phrase is also used in the study of counter-factuals, wherein the requisite change in the factual basis of the past is made and the resulting causalities are followed.