We used to think of failure as a problem, to be avoided at all costs. Now, we're often told that failure is desirable - that we must 'fail fast, fail often'. The trouble is, neither approach distinguishes the good failures from the bad. As a result, we miss the opportunity to fail well. Here, Amy Edmondson - the world's most influential organisational psychologist - reveals how we get failure wrong, and how to get it right. Practical and inspiring.