Thus, in the Court of Appeal decision of Olivine Capital Pte Ltd and another v Chia Chin Yan and another matter [2014] 2 SLR 1371 (“Olivine Capital”), the respondent sought a determination under O 14 r 12 of the ROC 2014 as to whether a compromise letter released him from any liability to the appellants in relation to a damaged sewer. The Assistant Registrar held that the letter did have this effect, a decision which was upheld by the High Court on appeal. The appellants appealed to the Court of Appeal, seeking to set aside the summary determination under O 14 r 12, and sought to amend their pleadings to introduce a new point premised on mistake. The court allowed the appellants to amend their pleadings to argue the point. In doing so, the court set out a comprehensive survey of the law on mistake, so as to “illustrate why the relevant issues cannot be resolved on the basis of affidavit evidence alone, but can only, instead, be resolved at a trial” (at [61]). While the court observed that whether the appellants could successfully rely on the point on mistake could only be determined after a ventilation of the full facts at trial (at [72]), the court must have considered that the appellants had, at the very least, an arguable case on this point. Indeed, if the appellants had a plainly inarguable case, the court would surely not have remitted the matter for trial, only to waste precious judicial resources.