There are a few things in life which I'd be comfortable using as a litmus test to judge the competency of people to participate in the important aspects of society--things like voting or teaching our children. In the light of the recent NBA scandal, I wanted to note that (despite this story!) one of my litmus tests is:
Have you ever called a sports-talk radio station to espouse a theory that a sporting contest was fixed by gambling coaches, athletes, or officials?