After quoting the aforesaid paragraph in Pharmaceutical Manufacturers, Nugent JA described the nature of the enquiry in the following terms:
‘But an enquiry into rationality can be a slippery path that might easily take one inadvertently into assessing whether the decision was one the court considers to be reasonable. As appears from the passage above, rationality entails that the decision is founded upon reason ─ in contradistinction to one that is arbitrary ─ which is different to whether it was reasonably made. All that is required is a rational connection between the power being exercised and the decision, and a finding of objective irrationality will be rare.’ (Footnote omitted.)
At para [18] in The National Treasury v Kubukeli (20567/2014) [2015] ZASCA 141 (30 September 2015) per Van der Merwe AJA (Mpati P, Mhlantla, Majiedt and Saldulker JJA concurring).