What’s happening in the Google antitrust trial? It’s kind of a black box.

We’re going on Week 3 of Google’s high-stakes trial over allegations that it bought its way to dominance in internet search. The Department of Justice and several states allege that the tech giant has maintained a lucrative monopoly through exclusive contracts with browser companies and phone makers like Apple and Samsung. Google has countered that it’s dominant in search because it offers the best product. Covering this trial has been a complicated task. Part of the challenge is that Google and other companies involved have moved to shield documents from public view. That applies to some testimony too. Leah Nylen, an antitrust reporter for Bloomberg who’s been present throughout, told Marketplace’s Lily Jamali about the trade-offs involved in these confidentiality decisions.