[AshamedCaptain]

> If I say something imprecisely or if I make a non-fundamental mistake, an oral setting gives me the chance to correct myself and prove to the examinator that I have a strong grasp of the material regardless

This is just even further proving the point, which is that in an oral context this means that the animosity of the examiner is much more significant than in a written one, which by definition implies that the oral one cannot be fairer than the written one.

You yourself are saying that you "have the chance to correct yourself". This is either because you will self-correct yourself on recognizing a specific (perhaps subconscious) face or gesture from the examiner, or because the examiner will directly tell you that you are wrong. Both cases present ample opportunity for unfair discrimination. In the first case, perhaps a person is less skilled at reading people, or perhaps the examiner just has a better poker face. In the second case, you are now at the whim of the examiner to decide based on your body language whether "you are making a non-fundamental mistake and deserve a second chance" or just "have no idea of the material and don't deserve a second chance". And, compared to the written exam, there is absolutely no record of the context that drew the examiner to such conclusion -- which is also kind of important, since evidently the written exam is also subject to some discrimination.

[qsort]

This isn't how oral exams work, though.

Nobody expects you to be 100% on point, it's just impossible; it's not like the spoken variant of a written exam. The kind of "correction" I mean is more along the lines of what would happen during a normal conversation. Imagine I was asked to write a recursive algorithm and I forgot the base case. It's not a fundamental mistake, but the professor might interject to make sure I actually know about termination, inductive sets, etc., which is actually great if you understand the material deeply, because it gives you a chance to prove that you actually just forgot.

Obviously this is assuming good faith by the examiner, but if you aren't willing to assume that, there aren't very many examination formats that are going to work very well.

[AshamedCaptain]

Is not a question about good faith or not. He may be showing completely unintentional bias. But the point is that the oral one gives you a shitton more opportunities to play that bias. If you even try to say that the oral exam is just "a normal informal conversation" rather than something following a very strict protocol you might as well just give up any appearance of fairness. How much role bias would play on such a conversation is just outside the scale.

[t0mas88]

It's not the examiner deciding "you deserve a second chance or not". In a normal oral exam everyone gets a "I don't think that's correct" or "please explain that to me" kind of response on a wrong answer. They don't silently scribble a note to distract a point from your score or something like that.

How you deal with that is really where your score comes from. Because if you know what you're talking about you'll correct it and while doing so show that you know a lot of related things. While if you have no idea you can't guess yourself out of that type of question.