Successful late bloomers are all around us. Morgan Freeman had his breakthrough roles in Street Smart and Driving Miss Daisy in his early 50s. Colonel Harland Sanders started Kentucky Fried Chicken in his 60s. Isak Dinesen published the book that established her literary reputation, Out of Africa, at 52. Morris Chang founded Taiwan Semiconductor Manufacturing, the world’s leading chipmaker, at 55. If Samuel Johnson had died at 40, few would remember him, but now he is considered one of the greatest writers in the history of the English language. Copernicus came up with his theory of planetary motion in his 60s. Grandma Moses started painting at 77. Noah was around 600 when he built his ark (though Noah truthers dispute his birth certificate).

Why do some people hit their peak later than others?