As originally proposed in the early 1970s, the proto-industrialisation model was meant to serve as a more complete explanation of that phase in the general transition from agrarian feudalism to industrial capitalism rather vaguely referred to as the period of manufactures. Early proponents emphasised the role of proto-industrialisation in channelling development toward fully-fledged factory system industrialisation. Proto-industrial theories dealing with the complex interplay of economic, social, demographic, cultural and technological processes eliminate many of the uncertainties generated by the original debates over the general process of transition. Certainly, it is no longer possible to deny the contributions of rural/peasant non-agricultural productive activities to the development of early factory industry as a whole, as well as to social changes leading to the emergence of a proletariat.