PP,
I think we agree more than you think. I didn't say that you 'learnt' to give the correct answers, however you did say "Understanding it is the key, then you can at least exert some form of control over the situation.". Which was what I meant.
My point is simply that you should be able to spot the extreme personality types either in interview, as as mentioned, in a good MCC course. Earlier failings (ie choosing the crusty ex-RAF squadron leader for whom CRM was anathma) was more due to the criteria used than the process itself.
I'm not anti-test - just unconvinced that personality typing actually works in the way it's often claimed. As you say, it's worked out fine for you so far, maybe it does for the majority of people, but are you sure that there's not people who would would have made excellent pilots failing? For arguments sake, let's say you know 100 commercial pilots - then you probably know 100 different personality types, none of which conflicts with their ability to drive a plane. Let's face it, 411A claims to have been doing it for decades without crashing
PS "Didn't we do all this a few months back?" - Not me!