Who are the 'they' that know everything about you?
The 'they' are the powers that be, insurance companies, financial institutions, and magazines, who gather and know personal details. They know your idiosyncrasies, where you spend and invest money, your health, and everything about you, with no escaping their information-gathering reach.
Les teaches that when someone asks who 'they' are, the answer includes the powers that be, insurance companies, financial institutions, and magazines. He notes that they know your idiosyncrasies, where you spend your money, where you have it invested, how you spend it, and your health. In farming, he says farm magazines will give a free subscription if you fill out information about your operation, such as how many cows you run and how many acres you have. He has quit filling them out and would rather pay for his subscription so they do not have to know. This illustrates the broader system gathering outgoing information, as one-world government powers will know the activity of every home on the planet.