3 I am not satisfied on the materials before me that "in all the circumstances of the case it is just and reasonable to grant the extension of time sought" (the Act, s5(3)) or to use the paraphrase of the High Court in Sophron v The Nominal Defendant [1957] HCA 27; (1957) 96 CLR 469 at 475 that there is "some positive reason for concluding that as between the parties it would be just to extend the period" for instituting the proceedings against these respondents. The evidence is, at this stage, scant as to whether or not these respondents, though the original architects of the building, designed the apparently unprotected ledge area from which the applicant fell. As modifications were made to the building in 1981 and the then architect has been joined as a party, it would seem that there is at least a claim that he is responsible in some way for the defective design for which, on the basis of Voli v Inglewood Shire Council (1962 - [1963] HCA 15; 1963) 110 CLR 74 the applicant seeks to rely to establish liability. The conduct of the applicant's solicitor in joining Fellows Pty Ltd rather than the respondents and in seeking to rectify that error when he discovered it is beyond reproach, but the possibility of prejudice is a very significant factor in this case. No affidavit of specific prejudice was filed to attend the hearing of the application, but counsel for the respondents, without protest from counsel for the applicant, said in the course of his submissions that his clients, in their affidavit of discovery in the action, had claimed to be in possession now of only very few relevant documents and, in my view, the passage of time is itself more significant here than the duration of the delay since the expiration of the time allowed by the Act. The conduct of the respondents relied upon by the plaintiff as giving rise to a liability towards him was performed prior to 1978 and modifications have been made to the building subsequently by another architect, although whether these affect the relevant portion of the premises, and if so, to what extent, is unclear. There is, furthermore, the consideration adverted to by McHugh J in Brisbane South Regional Authority v Taylor [1996] HCA 25; (1996) 186 CLR 541 at 552 that parties and their insurers have an interest in knowing that they have no liabilities beyond a definite period.