'''Occam's razor''' or '''Ockham's razor''' is a principle that can loosely be described as ''the explanation that introduces the fewest new assumptions is the one that is most likely to be correct''. It is also called a methodological tool reflecting the imperative ''don't invent unnecessary entities to explain something.''<ref name="DeniableDarwin">{{cite book | '''Occam's razor''' or '''Ockham's razor''' is a principle that can loosely be described as ''the explanation that introduces the fewest new assumptions is the one that is most likely to be correct''. It is also called a methodological tool reflecting the imperative ''don't invent unnecessary entities to explain something.''<ref name="DeniableDarwin">{{cite book |