The document discusses the potential for virtual reality (VR) and augmented reality (AR) on the web. It argues that the web is well positioned to reach billions of users for VR/AR because it has no friction, is open/shareable, and is built on standards. Current initiatives like WebVR aim to define browser APIs for VR, and frameworks now exist for building VR experiences using web technologies like WebGL. The document predicts VR/AR on the web will become the predominant way people interact digitally by reaching massive scale through the "immersive web."