How was a brilliant physics professor tricked into carrying 2kg of cocaine across the Argentinian border? Why do doctors misdiagnose 10 to 15% of their patients? Why do Nobel Prize winners spread fake news? We assume that smarter people are less prone to error. But greater education and expertise can often amplify our mistakes while rendering us blind to our biases. This is the 'intelligence trap'. Drawing on the latest behavioural science and historical examples from Socrates to Benjamin Franklin, David Robson demonstrates how to apply our intelligence more wisely; identify bias and enhance our 'rationality quotient'; read and regulate our emotions; fine-tune our intuition; navigate ambiguity and