Historical data are records of things the individual has done or achieved. Trophies, diplomas, mementos of graduations or weddings, old bank statements, email archives, publications, and records of past addresses or employers fall into this category. Historical data are often added to but rarely changed. Current data are things that the individual is involved in doing now or will be doing in the near future. Daily activities and schedules, the individual's current location and activities, identifying data, and social network data all fall into this category.
Current data are often updated.
Speculative data are things that the individual wants to do. Speculative data are often updated or deleted. As we act on speculative data, it moves into the current category. In summary, the data are divided into two categories. Any profile needs this flexibility.