That scene, in Battle of the Sexes, the smartly engaging and depressingly relevant new movie about the match starring Emma Stone and Steve Carell, is a blast from the past loaded with lessons for the future, an eerie reminder that today’s rebloom of sexism is a scary echo of decades — actually, centuries — of innate and cultural misogyny. And it’s a handy playbook to get through our current crisis. Crises.