Reuse: Empirical data High reuse in some limited environments, not widespread however NASA Goddard study Garlan Allen Ockerbloom Performance problems(from large size and complexity) Complexity frequently inappropriate for tasks performed Trouble fitting components together In some cases, took significant reengineering to make the interoperate properly Maintaining synthesized system difficult in absence of low-level understandingCopyright Nancy Leveson, Sept. 1999 Reuse: Empirical Data High reuse in some limited environments, not widespread c however. NASA Goddard Study Garlan, Allen, Ockerbloom: Performance problems (from large size and complexity) Complexity frequently inappropriate for tasks performed. Trouble fitting components together. In some cases, took significant reengineering to make the interoperate properly. Maintaining synthesized system difficult in absence of low-level understanding. �