This chapter sets out how an account of vision in which the world is considered to form an external memory allows for explanation of the experienced continuity of vision. It shows how the hypothesis of the world as an outside memory is supported by findings in the change and attentional blindness paradigms, as well as by the study of vision in action. The change blindness paradigm has generated much research and can be observed in a variety of situations (when the image change occurs during e.g. eye blinks). Further empirical confirmation of the idea that we do not continually represent the entire visual field in all its richness comes from the inattentional blindness paradigm. Data obtained by studying vision in natural conditions have highlighted features that are strongly supportive of the hypothesis of the world as an outside memory.