Mr. Robert Watt:

Ultimately, it has to come back down to the nature of it. I talked about what this contract is about. Someone is asked to do a particular project and to spec something - a discrete piece of work - whey they can then define afterwards how well they did in speccing it. They said they would need ten windows but how many did they actually need? I know that is simple, but the Deputy knows the point I am making. What I am suggesting is that we should link payment to the ultimate delivery, so they said something and then they said what. That is relatively straightforward.