Theatre history sometimes amuses us with the persistence of certain notions which, no matter how roundly discredited, simply refuse to die. One of these speculations concerns the method of pairing role and actor in the Elizabethan theatre. Actors were assigned to their roles, and roles were written for actors, in accordance with the actor's “lines of business” — weren't they? T. W. Baldwin's long and influential book, The Organization and Personnel of the Shakespearean Company, attempts to prove this method of role designation. However, his is one of those theories of remarkable stamina which, in spite of serious critical challenge, never stay down for the count, but stagger gamely back into lectures and appear unexpectedly in respectful citations. Given its shortcomings and inaccuracies under close scrutiny, Baldwin's hypothesis seems to demand a final and permanent interment. To that end, I will examine the question of acting lines — the theory, its champions and its challengers, and the evidence for and against it, taking Baldwin's work as a starting point.