That... isn’t true. Men are not x% more productive across the board, nor do they put in y% more effort across the board. If you disagree with the premise that

That... isn’t true. Men are not x% more productive across the board, nor do they put in y% more effort across the board. If you disagree with the premise that women put more effort into social relationships be my guest. But there’s another aspect at play here whereby your friends are largely chosen by you whereas your salary is chosen for you. They’re not the same.