"Further to our meeting at court this morning, I understand that you wish to give notice of discontinuance of the first action against the Council and I consent to this on the basis that there will be no order for costs"
"Operative mistake traditionally has been confined to mistakes of fact and not of law. This distinction has always been blurred and has been notoriously difficult to apply. It appears that equity did not draw a clear line between mistakes of fact and law. If there was such a rule, it was often honoured in the breach. In Western Australia the law/fact distinction has been abolished by legislation (with certain safeguards). The whole question has now almost certainly been laid to rest by the decision of the High Court in David Securities Pty Ltd v Commonwealth Bank(1992) 175 CLR 353 . In that case the distinction between mistake of law and mistake of fact was rejected in the light of a very considerable body of judicial and academic criticism of the distinction. …the rule precluding recovery of moneys paid under a mistake of law should be held not to form part of the law in Australia."
"It would be best to abolish the mistake of law rule, place mistakes of law and of fact on an equal footing, and recognise that with mistakes of law the principle of conscious ignorance or conscious assumption of risk will often prevent relief…" 28 The dissent of Dickson J. was accepted by the majority of the Supreme Court of Canada in Air Canada .v. British Columbia (1989) D.L.R. (4th) 161. Thus, the distinction between mistake of fact and law was effectively abolished in Canada contract law. What equitable remedy is now available and when it ought to be applied has, however, become the subject of several conflicting and confusing judgments. Generally the courts require a mistaken assumption to be fundamental to the agreement before it justifies a remedy. The remedy, when prescribed, is usually rescission."