Old ’ nGrey - application for PIM in a situation of multiple versions : the influence of using the application on retrieving the last version / Noga Dvir

Personal information management (PIM) is a basic human-computer activity in which the same user saves and organizes the information as well as retrieves it later. Because hundreds of millions of users save and retrieve their personal information many times a day, even the smallest improvement in the human-computer interface can generate a significant improvement in their overall productivity and efficiency. One of the problems in PIM is the issue of multiple versions of the same file: users tend to create a considerable number of versions for the same file but are interested in retrieving only the last version. The users need to easily and quickly retrieve the recent version is not supported by current operating systems. Bergman and his colleagues (Bergman et al., 2003; Bergman, Beyth-Marom, & Nachmias, 2008) developed a design for PIM systems The User-Subjective Approach. According to this approach PIM systems should capture the subjective attributes given to the information item by the user and based on them enable the interaction of the user with the item when saving and retrieving it. The user-subjective approach offers several design principles one of them is the demotion principle. According to this principle information items with low importance for the user will be less visible, in order not to compete for the attention of the user, but still remains in their original context (as opposed to moving to archive). This principle is based on cognitive psychology studies that indicate that more visual distractors are adjacent to