The principle is widely accepted as physical law, but in recent years it has been challenged for using circular reasoning and faulty assumptions, notably in Earman and Norton (1998), and subsequently in Shenker (2000) and Norton (2004, 2011), and defended by Bennett (2003) and Ladyman et al. (2007).
O principio é amplamente aceptado como lei física; pero en anos recentes ten sido desafiada por varios, notabelmente en Earman and Norton (1998), e máis tarde en Shenker (2000) e Norton (2004, 2011); e defendida por Bennett (2003) e Ladyman et al. (2007).