Barbie” continued its run of pop culture domination over the pre-Halloween weekend, the film’s co-writers Greta Gerwig and Noah Baumbach dished on their writing process following a special screening at the Writers Guild of America West headquarters. Because Baumbach sat out the “Barbie” press tour in accordance with the WGA strike, Friday night’s screening marked his first in-depth interview about the $1.4 billion-grossing film. Sitting opposite Judd Apatow, who moderated the hour-long conversation, Baumbach reacted to the worldwide acclaim for the film, which was evidenced by the completely sold-out screening.