"Minds are like parachutes. They only function when they are open." This was the quote by Sir James Dewar that Morton Thiokol engineer Allan MacDonald put in t

"Minds are like parachutes. They only function when they are open." This was the quote by Sir James Dewar that Morton Thiokol engineer Allan MacDonald put in the foreword to his book "Truth, Lies, and O-Rings" -- highly recommended if you enjoy pondering organizational banality and how human decision-making works (and often doesn't). He goes on to say in the foreword: "I wasn't recommending not launching because of what I knew, but because of what I didn't know."