Two of the Festival’s most exciting millennial authors explore how their darkly funny, profoundly moving debut works engage with the excesses of late capitalism. Nana Kwame Adjei-Brenyah’s stinging satire Friday Black dissects the dehumanising forces of capitalism and racism in America. Ireland’s Caoilinn Hughes examines art, privilege and the meritocracy myth in her hilarious and anarchic Orchid and the Wasp. In conversation with Peter Polites.