Imagine this: you’re a kid again, and you want to sell lemonade in your neighborhood. So you set up your little lemonade stand with your cardboard sign written in crayon and get to work.

The first day, one person comes and buys some lemonade. Then the second day, two people come. Then the third, three. And the fourth, four. Within a month, you’re serving dozens of people lemonade every day and the demand just keeps growing.

But it gets better. Not only does the whole neighborhood want a taste of your sweet, citrus squeeze, but the price of lemons just seems to keep getting cheaper. At first, you can get five lemons for a dollar. Then the next week you can get eight for a dollar. Then the next you can get twelve. And on and on. Within a few months, you’re a lemonade money-making machine.