“Child prodigies amaze us because we compare them not with other performers who have practiced for the same length of time, but with children of the same age who have not dedicated their lives in the same way. We delude ourselves into thinking they possess miraculous talents because we assess their skills in a context that misses the essential point. We see their little bodies and cute faces and forget that, hidden within their skulls, their brains have been sculpted—and their knowledge deepened—by practice that few people accumulate until well into adulthood, if then. Had the six-year-old Mozart been compared with musicians who had clocked up 3,500 hours of practice, rather than with other children of the same age, he would not have seemed exceptional at all.”