“Browsing the Web. Surfing the Net. Navigating a Web site. Traversing a hierarchy. Going back. Scrolling up and down. Returning home. We’ve seen such metaphors throughout our history of using computers to interact with information. Haphazard though they may seem be, these metaphors highlight a universal reality of human psychology: we perceive the world – both physical and digital- – in spatial terms.”
Time/space dimensions don’t apply to the online world. At most, they are just metaphors or analogies.