ABSTRACT
Ima gine that a group of ten people decide to set up a co-operative enterprise manufacturing toy cars, and that they had available ten rooms arranged down a cor ridor in which they could work. They might decide to have one per son in each room, each building an entire car from start to finish. This, how ever, could be slow and inef ficient, because each worker would need to learn many skills, and the rooms would have to contain the whole range of com pon ents involved in manufacture. It might be dif fi cult to keep track of which stage of assembly was cur rently under way.
