If i don't know where the particle is, i can't do anything with that. If i puta a divider in the box, half the time the divider will move to the left. And that's not doing a lot of work - it's doing very, very little. Whereas if i have the information of knowing exactly where the particle are and how it's moving, then i can wait to put the divider in at exactly the right time. So it's always information, in some sense, that is allowing you to do the manipulations that extracts work from a physical system. But there is a an interplay here. Knowing more information lets you do more work,