Research has indicated that the matrix structure is often confusing because it requires multiple roles for people, with resulting confusion about these roles (Keith Davis, Human Relations at Work, New York: McGraw-Hill, 1967, pp. 296–297). Unfortunately, not all program managers, project managers, and project engineers possess the necessary skills to operate in this environment. Stuckenbruck has stated, “The path to success is strewn with the bodies of project managers who were originally functional line managers and then went into project management” (Linn Stuckenbruck, “The Effective Project Manager,” Project Management Quarterly, Vol. VII, No. 1, March 1976, pp. 26–27). What do you feel is the major cause for this downfall of the functional manager?