Very good article that talks about why the rank and yank management system creates a back stabbing culture and stifles innovation. This is the main reason Qualcomm lost its ways.
"Because someone would have to be ranked worst even on teams full of all-star performers, Microsoft's most talented employees refused to work together. Because employees were not judged on their own work, but on how well they did relative to their peers, they would actively seek to undermine each other."
http://www.businessinsider.com/why-yahoos-performance-review-system-landed-yahoo-in-hot-water-2016-2?ref=yfp