The majority emphasised that the primary judge, Kiefel J, was the trial judge, had been responsible for the management of the present case since 1994 and was in the best position to judge the effect of the proposed amendment. Even so, the application for leave to amend was made before a date was fixed for hearing. The date when fixed was six or so months ahead. It is not apparent that any complex issues of fact are raised by the amendment sought, but even if they are, in a hearing that is estimated to last some four months, they must surely be able to be accommodated. The fact that the new defence which the applicants seek to put in issue may possibly be met on reply by a plea such as that of estoppel or waiver does not suggest any reason for the refusal of the amendment. Moreover, whatever the state of the pleadings, the point which the applicants seek to raise by the amendment may not be avoided on trial if, as seems to be so, it would be apparent from the documents themselves. The purpose of the amendment was, according to the applicants, merely to avoid taking JLH by surprise. But if the amendment sought does raise a new defence and not merely a matter which JLH is required to prove in any event, it constitutes a substantial, if not complete, answer to JLH's claim. If it is arguable, the applicants should be permitted to argue it, provided that any prejudice to JLH might be compensated by costs. No doubt prejudice to JLH may also be averted, as Carr J in dissent in the court below pointed out, by appropriate orders expediting such procedures as the parties might seek to employ as a result of the amendment.