Re: This is absolutely true when it comes to gender balance
That's quite a leap to make.
It could just be that the fewer number of women studying are all more highly capable due to social factors. So all the 10% women may be at the same technical level (or, god forbid, higher) than the top 10% of men. Therefore it may be that having 50% or higher women in the top jobs would make sense.
OK, the two scenarios are thus.
Mine:
In any group of people, there will be a range of abilities. When a particular group of people is 90% male then, by the law of averages, you will have significantly more talented males than females.
Yours:
Mysterious "social factors" conspire to make 100% of women more talented than 90% of the men, for any given group.
And I'm the person making quite a leap! :)
Now, you may argue that the end justifies the means but when a society introduces "positive" discrimination and quotas for positions, it is inevitable that talented individuals lose out to those that are less so.