If you know what you want in life, technology can help you get it. But if you don’t know what you want in life, it will be all too easy for technology to shape your aims for you and take control of your life. To succeed in a daunting task of education and learning about the world, you will need to work very hard on getting to know your operating system better. To know what you are, and what you want from life. This is, of course, the oldest advice in the book: know thyself. For thousands of years philosophers and prophets have urged people to know themselves. But this advice was never more urgent than in the twenty-first century, because unlike in the days of Laozi or Socrates, now you have serious competition. Coca-Cola, Amazon, Baidu and the government are all racing to hack you. Not your smartphone, not your computer, and not your bank account – they are in a race to hack you and your organic operating system. You might have heard that we are living in the era of hacking computers, but that’s hardly half the truth. In fact, we are living in the era of hacking humans.