What has Goldman Sachs been doing since 2008? A simple question with a complex answer. More specifically – how has Goldman Sachs made so much money since the credit crisis of 2008? BBC’s Matt Prodger spoke with Tom Ajamie, who employed a team of legal experts to explore Goldman’s current derivatives deals, but could find very little information on what its traders do. “My fear is that Goldman Sachs is a black box company, and black box companies make me nervous,” said Ajamie.