David Sacks on the Power of a Great Product Hook

David Sacks says one of the most important things he looks for in a product is a hook — a simple behavior that users naturally repeat. Without it, he argues, it’s almost impossible to get people to engage in deeper or more complex ways. “If you can’t get users to engage in a simple behavior,” he explains, “you’re not going to get them to engage in anything more complicated.”

Sacks even prefers a strong hook over a clear market need. Given the choice, he’d rather back a founder who has discovered a compelling habit loop, even if they’re still figuring out which market they’re truly disrupting. A hook creates energy and momentum that can reveal the market as you go.

Designing that hook, though, is difficult. One useful framework comes from Nir Eyal’s book Hooked: How to Build Habit-Forming Products. He breaks the concept into four parts: the trigger that prompts a user to act, the simple action they take, the variable reward that keeps them coming back, and the small investment they make that increases the odds they’ll return. It’s a powerful way to think about product design, even if executing on it is far from easy.