"Such entrepreneurs as Sam Walton ofWalmart, Bill McGowan of MCI, and McDonald’s Ray Kroc, among many others, did not launch their maverick businesses until after their fifth and sixth decades. Henry Ford did not introduce the Model T until after he was 45. Alibaba’s Jack Ma is 51. Zhang Ruimin, the CEO of China’s Haier, led his company to global dominance at age 67. And Steve Jobs’ most successful innovations, including the iMac, iTunes, iPod, iPhone, and iPad, were developed after age 45."