Twenty years ago, the tech billionaire Peter Thiel and an associate founded Dialog, an invitation-only network of elites from business, academia and politics. Dialog was so secretive that it never had a public-facing website, and its participants were never identified to outsiders. Until now. Data related to Dialog, which Thiel created with the Silicon Valley investor Auren Hoffman, has been exposed online, opening a window onto the influential but discreet organization. Download the SAN app tod...