“Put simply, in arbitration one waits until the end of the contract. One has a full-blown argument about it, perhaps in the courts with barristers and heaven knows what. It may take a year or two years to get to the end of it. Adjudication is an attempt to resolve the matter forthwith” (ib.,1st April 1996 , cols. 16 and 17). An amendment was proposed to add after the words “at any time” the words “within the period prescribed in the contract”