Culture, according to A.N. Whitehead, cannot stay in its place; -it either moves forward or backward. The progress of culture is dependent on forseeing the future, which results in innovations, and in the recognition of the past, into which these innovations are to be anchored. The process of assimilating new technologies, customs and ideas into the existing fabric of life and values, is characterised by an arythimic pace. The pace of social change is different from one period to another, from society to society and from one behavioural pattern to another. From the differences in the pace of internalising change into various behavioural patterns one can learn about the differences in the measure of inertia in each of these patterns. These can be uncoverd through observing the process of change a specific society is undergoing during a specific period of time. A study of this nature was made in relation to the environmental behaviour of a rural Bedouin society who underwent a process of gradual change from a nomadic lifestyle to permanent settlement. The research investigated those expressions of change connected to the physical environment, its organisation and use. An analysis of the housing pattern, the plans of the dwellings, the arrangement of activities within the home, the attitude to the physical variables and to dwelling functions, showed that there are differences in the readiness of a society to internalise changes in its various modes of living. In this regard, it is possible to differentiate between three main planes which are characterised by different amounts and types of inertia: 1. The funcional plane - which relates to activities intended to fulfill the daily needs. 2. The plane of habits - which relates to subconscious behaviour and includes environmental habits and motor-sensory reactions to physical stimuli. 3. The plane of norms and values - which relates to the rules controlling social behaviour Under conditions of internally generated and gradual change (as was the case in the research shown) it was found that at the functional plane - the society and the individuals within, react rapidly to changing circumstances and needs, and use efficiently available resources and technology. The plane of habits is characterised by inertia whose nature and measure are connected to the prior experiences of individuals, their age and charactere.. The plane of norms and values represents the tension between a society's past - on which its identity is dependent, Sand between its future - on which its continuity is conditioned. At the values plane new technologies and patterns are not absorbed as at the functional plane, and are not repulsed either as at the the plane of habits - rather, at this plane, a profound and prolonged process of testing and shaping patterns of change, in a manner which will enable them to be woven into the specific fabric of the changing culture, takes place.