According to Andrew Oddy in 1992, "modern scientific conservation is governed by an unwritten set of rules or ethics".[62] There have been many failed attempts to codify these "rules" because conservation requires individual application and is dependent on the goals of the museum and curator; consequently, these approaches cannot be generalized.[62] Paul N. Banks wrote "The Laws of Conservation", also known as The Ten Laws of Conservation; though never officially published, they have been widely shared by his students.[13]