For anyone running a business, technology is both threat and opportunity. Today, we run through techniques entrepreneurs can use to take advantage of new tech or defend against the dangers. It's not just about the product you're selling. It's about consumer psychology, and ethics, and taking calculated risks to navigate uncertainty.But, since this is Planet Money Summer School and we want to set your business on the path to riches, we're going to talk about how to use tech to dream big. Maybe more than anything, technology creates opportunities for the little guys where the big established companies can't be so nimble or have too much to lose. Take the classic concept of the innovator's dilemma: a company that innovated and succeeded, now faces a choice about any disruptive new technology. Do they risk tossing out their existing advantage and switch to the new tech, or play it safe and risk becoming obsolete?Most new technologies don't end up disrupting an industry. So it is totally rational for the big existing companies to ignore each new flash in the pan. But nobody wants to end up like Kodak: sticking with film while the digital camera takes off. So what to do? Our friendly professor has a few ideas – for the little guy and the big old company. He'll explain the shape of how new technology gets adopted, sometimes called the S curve. We'll also hear examples of what stops promising new tech from taking off: from dishwashers to driverless cars, and even the humble elevator.