After more than a decade in prominent marketing roles at Viacom, Ross Martin has spent the last year launching Known. His latest venture aspires to disrupt the traditional ad agency sector by taking advantage of what he sees as growing mistrust between brands and their partners. Ross discusses why some marketers are expected to struggle to adjust to a post-Covid, post-cookie reality, unless they significantly up their investment in true data science - and not just hiring someone "who is good at Excel".