However, Paul Grice's letter is helpful and very detailed.I am not sure that I share in Margo MacDonald's continuous guerrilla warfare against the project; the important thing is that the project is going ahead, and we need to get it right.Mr Grice makes a particular point about the financial effect of the redesign of the chamber, which, on a relatively restricted site, was bound to have a knock-on effect on other parts of the building.