The producers in the third show shift to the most controversial topic, the counterculture. Just the idea of making sense of that phenomenon is difficult, for as Abbie Hoffman supposedly said, "If you can remember the 1960s, you weren't there." Also, a generation later in "just say no" America, presenting the reasons for "getting stoned" is fraught with peril. Fortunately, "Breaking Boundaries, Testing Limits," attempts to explain the reasons for the revolt against mainstream culture, its forms and symbols, its growth and excesses, without heavy editorializing.