【明報專訊】IT may take long to complete a project. When it is under way, unforeseeable things may happen - unfavourable weather or man-made untoward occurrences. However, allowances may be made for such factors when it is on the drawing board. Additional funding will be needed if an unfavourable situation arises. It is the watchdog's duty to make sure that, though there is a cost overrun, neither money nor time will be wasted.