DISCUSSION HISTORY

A discussion or comment history can be maintained on each object.  Now, the "why" of all changes can be recorded along with the automated change history.

DISCUSSION / COMMENT HISTORY

Key information about any particular piece of project information can't always be captured in a standard data field, and requires explanation over time.  

Having the ability to maintain a discussion or comment history on a given object, such as a task or requirement is another essential capability of world-class project collaboration.