Pixote: a Lei do Mais Fraco (] , lit. "Pixote (small child): The Law of the Weak") is a 1980 Brazilian drama film directed by Héctor Babenco. The screenplay was written by Babenco and Jorge Durán, based on the book "A Infância dos Mortos" ("The Childhood of the Dead Ones") by José Louzeiro.

Based on the paragraph above can we conclude that "Héctor Babenco directed many films in the 80's."?
It's impossible to say