The strength of the OD/Lewinian model also lies in its simple representation (which makes it easy to use and understand), although this is also perhaps its major weakness as it presents a unidirectional madel of change, In other words, by creating an image of a need to design in stability (refreezing), the madel has a tendency to solidify what is a dynamic and complex process. It may also result in the creation of cultures and structures not conducive to continuous change. On this point, Marvin Weisbord (1988) has argued that Lewin’s concept begins to fall apart as the rate of market and technological change enters a state of continual transition, rather than the ‘quasi-stationary equilibrium’ that is at the cent re of this approach. The OD camp has also been criticized for failing to account for the increasing incidence of revolutionary change that, according to Dunphy and Stace(1990), may more effectively be achieved by coercive rather than collaborative top-down strategies for change. For example, they point out that OD practitioners have tended to focus on collaborative models, whereas corporate strategy consultants have tended to select dictatorial transformation as the appropriate strategy for managing large-scale discontinuous change. Dunphy and Stace argue that whilst there is a place for each strategy, selection should be made on the basis of dominant contingencies rather that assuming that there is a one best way to fit all occasions. This alternative situational model to change management is outlined and discussed below.