Do Not Revise Ockham's Razor Without Necessity

Ockham's razor asks that we not multiply entities beyond necessity. The razor is a powerful methodological tool, enabling us to articulate reasons for preferring one theory to another. There are those, however, who would modify the razor. Schaffer (2010: 313our italics), for one, tells us that, I think the proper rendering of Ockham's razor should be Do not multiply fundamental entities without necessity''. Our aim, here, is to challenge such re-workings of Ockham's razor.