17 Having regard to the underlying rationale, the principle may perhaps be seen as the corollary of the principle discussed by the High Court in Gerlach v Clifton Bricks Pty Ltd; namely, that it is, as a general rule, open to a party to challenge an interlocutory order in appeal proceedings brought following final judgment, provided that the interlocutory order "affected the final result": see Gaudron, McHugh and Hayne JJ at [6] - [7]. We note that in the dissenting joint judgment of Kirby and Callinan JJ, having observed that the relevant principle "should not be narrowly confined" as it was supported by "one and a half centuries of judicial practice spanning virtually the entire period since appeal, as a creature of statute, became common to our legal system" together with "many practical considerations" (which I would observe included those referred to by Jordan CJ in Gilbert), their Honours held (at [50]):
The Privy Council practice arose in the circumstances of the expenses and delays involved in taking colonial appeals to London. Now, new but in some ways similar considerations reinforce the old rule. Many cases, hotly contested at interlocutory stages, are later settled. Even when pursued to judgment, parties commonly learn the wisdom of selecting their most arguable points to contest. In this way, appellate courts, with congested lists, are spared needless hearings. They are fortified in their resolve to resist unwarranted and premature intervention that, of its nature, would otherwise commonly have to be afforded under great pressure of time.