Management 101?

The Terminal 5 débâcle is a classic example of the well-known dangers of the "crash, bang, wallop" approach to introducing new systems. I am surprised that BA - or whoever was responsible for the decision - made their minds up to go down this line, as they must have realised the very real potential for disaster. The better approach would have been to start by handling just a small percentage of full capacity, and allow the systems to bed in, before slowly increasing to maximum running. The problems would still have arisen, but would have been more controllable and less severe.