One of the more frequent uses of source history where I work is to see when an issue was introduced to help gauge the priority of a fix. When something is disc

One of the more frequent uses of source history where I work is to see when an issue was introduced to help gauge the priority of a fix. When something is discovered and someone wants to make it a stop-the-presses fix-it-now type thing, we look back in history to see when the change was introduced. If it's been there a while, and especially if an external customer has never created a ticket on it, we come back and say, "Well, it's been that way for five years now, so why don't we just put it into the next scheduled release instead of an off-cycle emergency fix."