Occasionally, a new idea will burst upon the world of work with such a force that it commands the attention of researchers and practitioners alike. It generates excitement, perhaps even a certain vogue, as active minds attempt to exploit it. Of course, the courtship eventually ends and a general consensus emerges as to just how seminal the idea was to begin with. Most likely it will come to occupy a niche in the prevailing scheme of industrial and organisational thought. Some—very few—pass into that select company of honoured concepts which have established new schemes for research and practice.