The idea of co-sleeping was not new in modern Western societies; as early as in 1976, Tine Thevenin had campaigned for the "family bed".[56] Sears doesn’t see a problem when a 3 year old still shares his mother’s bed every night.[57] He doesn't even object if a child is in the habit of literally spending the whole night with her mothers nipple in her mouth, except when the mother really feels uncomfortable.[58] Sears advises working mothers to co-sleep on all accounts in order to compensate the child for her daytime absence.[59]