I think it's wrong because it plays into the hands of people with good logical reasoning skills...
Afterall, its not like you'd ever need to diagnose something. Can't see that comming up...like ever
It's infinitely easy to break something down but building something up is harder.
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In the end, it will be based on academics, at least in part, because it should be.
Medicine is a hard course, there is a lot of work and things to absorb in such a short time. We'd be totally crazy to throw an academic measure out the window. No one really wants med-school drop outs or people scraping with passes.
A 99.95
signals something about the person. They obviously have great study skills and an above average level of dedication. Most people don't necessarily disagree with this. The disagreement lies in the fact that is there much of a difference in these things between 99.95 vs 95.00 vs 90 ? We can already tell they're probably academically capable but will choosing someone in the extreme upper range (98-99) produce better doctors than someone in the 95s or 90s?
The umat, despite all those who study for it and really (again just a judgement call) shouldn't, is a
psychometric test. It measures things about you as a person. It's not perfect but its better than ATAR alone. If you lock yourself away and studied every waking hour to get a 99.95 and had a gazillion tutors, that might not make you a better doctor. If you game the system and choose high scaling subjects, that might not allow you to be a better doctor either. The umat is a bit more of a level playing field.
It's not the best but its better than atar alone. I haven't seen all that many great alternatives suggested here (its harder than it seems).