Though you can't directly interact with the story in a 360 video, you can still choose where to look. This allows you to create your own experience of the story, and it's this freedom of choice that we call agency. As a director, you can create an experience for your audience with every intention of where they should focus their attention but ultimately, it's up to them where they'll look and how they'll spend their time. Agency is one of the major differences between 360 and 2D video and it's agency that helps generate presence and its presence that actually gives you the sensation of being in VR. If audiences recall a given VR experience by relating it to a moment they lived rather than something they've watched, you as the creator have provided them with a sense of presence. For example, if your experience is set on top of the mountain and the user pulls off the headset and says, "I was just on top of a mountain" rather than, "the scene was set on a mountain", you can trust they felt present. Immersion which creates presence refers to the technical aspects of hardware and software that trick the user into believing they are surrounded in this alternate reality. For example, if you turn your head in the headset and the experience changes with you, that's what we call immersion.