Book review: Wilful Blindness by Margaret Heffernan

Whistleblowers see a problem and speak out about it. But what about the people who know there's a problem but say nothing? What about those who can't even see there's a problem? If you're wondering about these questions, get a copy of Margaret Heffernan's book Willful Blindness. She surveys the evidence about how and why people turn away from unwelcome information, often to their own detriment.