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Indeed you should treat everyone equally, but if their capabilities show to be lacking you should be able to fire him/her, or he/she should start another education for example. They should have the same chances disregarding gender but not be te same because everyone has a different personality.

Merit should rule, not a predetermined quality. I agree. It's just that, having had a hand in education (professionally), I'm fully aware that assessments are not accurate. Many abilities are not measurable. Just give people a chance to prove themselves. If they cannot perform, they must be redirected. Not only are many abilities not measurable, but bias inevitably enters into every assessment. Just give people a chance to fail--or succeed. I've seen some surprising outcomes in my time.