" A grudge held from the last cycle may kill the promotion of an otherwise deserving person the next time around. Google’s engineering team solved these problems with promotion committees, which were assembled off-site for one day twice a year. They debated the promotions of other people’s direct reports, not their own, based on a packet of relatively objective information about each person’s accomplishments. "

― Kim Malone Scott , Radical Candor: Be a Kickass Boss Without Losing Your Humanity