This document discusses virtual and augmented reality technologies. It examines the challenges of simulating human senses like smell, touch and balance in VR. Current VR headsets can provide 3D visuals and tracking but lack tactile feedback. The document outlines design principles for VR like using movement driven by the user and object placement. It also discusses building empathy, connection and discovery in VR experiences. While VR is still early, the document suggests augmented reality may be ready for wider adoption through personalization, real world cues and narrative.