A carpenter’s or a machinist’s job is defined by the craft and varies little from one shop to another. But for the ability of a knowledge worker to contribute in an organization, the values and the goals of the organization are at least as important as his own professional knowledge and skills. A young man who has the right strength for one organization may be a total misfit in another, which from the outside looks just the same. The first job should, therefore, enable him to test both himself and the organization.