The American author whose We Need to Talk About Kevin won the 2005 Orange Prize for Fiction discusses her latest novel at Hay Festival. What if calling someone stupid was illegal? In Mania, where the Mental Parity Movement has taken hold, everyone is equally clever, exams are discarded and children are expelled for saying the S-word. You don’t need a qualification to be a doctor. Best friends since adolescence, Pearson and Emory find themselves on opposing sides of this culture war. Radio personality Emory makes increasingly hard-line statements while Pearson believes the whole thing is ludicrous. As their friendship fractures, Pearson’s determination to cling onto the ‘old bigoted way of thinking’ begins to endanger her job, her safety and even her family.