Nir Eyal@nireyal · Author of "Hooked" blog at NirAndFar.com
@duck_muscle the Hooke Model is only for products that must be used out of habit. Clearly, not all products need to be used habitually. There are lots of products I love that are infrequently used and therefore don't need habits. It's not that every product needs to be habit-forming, it's that every product that needs a habit needs a Hook.