Earlier quoted context omitted.
Perhaps "quota" is the wrong term. Yes Google doesn't have a limit on how many people they can hire in total, but in the interest of diversity they are likely to _limit_ the number of "X" people they hire (where "X" is some over-represented ethnic group).
As has been stated already in this thread the pool of qualified candidates forces Google to hire fewer people than they would prefer and their efforts on diversity include efforts to expand the pool of qualified candidates. They don't need to limit (or reduce) hiring (or retention) of any group to achieve diversity. The biggest diversity win for them would be expanded hiring in all groups, but greatest in those curre…
OK, so it sounds like they've got a fix that'll only take a couple decades to implement.
In the meantime, how do you think Google is going to improve their minority percentages in the absence of qualified minorities?