Goals, incorrectly, assume that we already know what it is that we want. Interestingness is more humble. It makes up its mind as it moves, slowly blowing from one thing to another, until it eventually grasps something that lies beyond prediction.
Interestingness isn’t hedonism or materialism or the chase of anything new and shiny that seeks to distract us. It’s deeper than that. It’s taking on that random project you had no plan to take on because you have a feeling that you might just learn something you didn’t know about yourself. It’s seeing a person you just met not as a potential partner or someone who can do something for you but simply as an individual who may open up a new, unknown, and unique dimension in your life.