The revisionist argument, whose supporters also include Joan Mencher, proposes a mixed system. The larger divisions were indeed subcastes, as they demonstrated a stability of status, longevity and geographic spread; however, the smaller divisions were fluid, often relatively short-lived and narrow in geographic placement. These divisions, such as the "Veluttetan", "Chakkala" and "Vilakkittalavan", would take titles such as "Nair" or "Nayar" in order to boost their social status, as was also the practice with other castes elsewhere, although they were often not recognised as caste members by the higher ranks and other Nairs would not marry with them. It has also been postulated that some exogamous families came together to form small divisions as a consequence of shared work experiences with, for example, a local Nambudiri or Nair chief. These groups then became an endogamous subdivision, in a similar manner to developments of subdivisions in other castes elsewhere. The more subdivisions that were created, the more opportunity there was for social mobility within the Nair community as a whole.