Original post by Physics EnemyIs this really a good attitude to take? You could easily say 'if your Maths ability was good, you'd never get pooled and leave it to chance' or 'if your Maths ability was good, you'd get an S in STEP I rather than a 1' or 'if your Maths ability was good, you'd have got 90+ in M1/S1, even with moderate revision and an off day'.
It's nice to have faith in someone, but it shouldn't be at the risk of him cracking. You seem to be of the opinion Maths ability dictates whether he'll be tired. Sure that has an effect; but no matter who you are, you need to concentrate, think hard and do a lots of writing. After 3 hours it can be hard to tackle STEP III.
I don't want to sound harsh, but I honestly think very few people should be confident of walking into STEP III with some fatigue, and getting at least a 1. It's very very plausible he would 'only' get a 1 if he walked into STEP III fresh in the afternoon (no exams AM). Thus he could drop to a 2 with the AM exams.
I'm not saying he will/won't suffer, I just want him to consider this before entering the exams. You can't be a whizz at everything, and you are human after all.