Octavia Spencer said yes to the role of NASA mathematician Dorothy Vaughan in “Hidden Figures” before she even knew the story was true.<br /><br />“I said ‘yes’ because it was such a compelling story and then I found out it was actually true,” Spencer, who thought the film was historical fiction before reading the script, said.<br /><br />Spencer and costars Aldis Hodge and Glen Powell, as well as writer-director Theodore Melfi, producer and songwriter Pharrell Williams, and producer Jenno Topping stopped by the Variety Screening Series, presented by AARP, on Monday to discuss the hit film.