"The only constant is changed"
One or two years ago, I said to others, now others say it for me.
Demand is of course easy to change, but in sometimes it is to be treated, you have a big damage to the project.
First of all, the demand analysis is not in place, and the name "is" in the future "--- See the surface of the demand rather than the essence, the face-to-change estimate is not so calm. In this case, the reasons for rework is not The changes in demand are not to be clearly understood.
In addition, the system is designed to be flexible and can be well responding. If the system is designed and realized that the control is not a chaotic or less, "the only constant is changed" ---- Really changed, you can't deal with it.
