`QI` is the smartest comedy show on British television, but few people know that were also a major legal hit in Australia, New Zealand, Israel and Africa and an illegal one on BitTorrent. We also write books and newspaper columns; run a thriving website, a Facebook page, a Twitter feed; and produce an iPhone App and a sister Radio 4 programme. At the core of what we do is the astonishing fact - painstakingly researched and distilled to a brilliant and shocking clarity. In Einsteins words: Everything should be as simple as possible, but not simpler.