“‘Usually,’ she explained, ‘they have a clear desk, since they don’t actually do any work, and when they say something, people do not argue with them. You can also tell by their eyes. They are dead behind. Lies do not bother them. It is very important to be able to spot them.’”
You Can Also Tell By Their Eyes
"The Neglected Value of Effective Government," by Prof. Rick Pildes (NYU)