> You're implying that there is an inverse correlation between this number and job performance. No I'm not. I'm suggesting that if others actually believed thi

> You're implying that there is an inverse correlation between this number and job performance. No I'm not. I'm suggesting that if others actually believed this figure then it would tend to push down the wages of those who had a higher number and they would represent better value for money. Companies who essntially ignored the number and hired based on other factors would tend to get better employees and would flourish. This would tend to reduce the 'wage gap' down to whatever its true predictive power was. Of course as you have mentioned this whole notion of one all-powerfull number is unlikely.