In his October 9, 2008 column, "Maybe It's Your Civic Duty Not to Vote," John Stossel cited Bryan Caplan's book on voter behavior, "The Myth of the Rational Voter. " 

"Maybe 75 percent of people can name the vice president. ... The public's knowledge of politics is shockingly low," economist Bryan Caplan said.

In his book "The Myth of the Rational Voter," Caplan argues that people who know little about our government ought to stay home on Election Day.

But aren't Americans always told it's their civic duty to vote?

"This is very much like saying, 'It's our civic duty to give surgery advice,'" Caplan said. "Now, we like to think that political issues are much less complicated than brain surgery, but many of them are pretty hard. If someone doesn't know what he's talking about, it really is better if they say, 'Look, I'm just gonna leave this in wiser hands.'"

But isn't it elitist to say only some people should vote?

"Is it elitist to say only some people should do brain surgery?" Caplan said. "The bottom line is, if you don't know what you're doing, you are not doing the country a favor by voting."