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How are successful screenplays crafted and what makes a film stand the test of time? Screenwriter and director Robert Towne, who won an Academy Award for Chinatown, stopped by the Think studio to discuss the topic when he was in town for the AFI Dallas International Film Festival.

Think airs Friday at 7:30 p.m. on KERA (Channel 13). It airs again Wednesday at 1:30 a.m.