This set of Google talks prove how much those "high standards" really mean in reality.

https://www.youtube.com/watch?v=XfNt6MsLj0E&list=PLbzoR-pLrL...

Pay specially attention to "Making C Less Dangerous", "STACKLEAK: A Long Way to the Linux Kernel Mainline", "Sub-system Update: Kernel Self-Protection Project", "Year in Review: Android Kernel Security", "Sub-system Update: Linux Integrity Status Update", "Security Module Stacks that Don't Fall Over ".