“He had a taste for asking complicated questions, and for tracking the answers into whatever rabbit hole they might lead him. He had, in short, an obsessive streak. It wasn’t until after he’d hired Schwall away from Bank of America to work for RBC that Brad noticed this side of Schwall. He should have seen it before, simply from Schwall’s chosen role on Wall Street: product manager. A product manager, to be any good, had to be obsessive.”