Why should public employee union members pay less for health insurance and get fatter pensions than the taxpayers who pay their salaries? Why is it a bad thing for property taxes to be held down and for school districts to cut perks for union members enough to hire more teachers?

◼ Barone: Life in a cocoon dulls political responses - Michael Barone/Washington Examiner

It's comfortable living in a cocoon -- associating only with those who share your views, reading journalism and watching news that only reinforce them, avoiding those on the other side of the cultural divide....

But cocooning has an asymmetrical effect on liberals and conservatives. Even in a cocoon, conservatives cannot avoid liberal mainstream media, liberal Hollywood entertainment and, these days, the liberal Obama administration.

They're made uncomfortably aware of the arguments of those on the other side. Which gives them an advantage in fashioning their own responses.

Liberals can protect themselves better against assaults from outside their cocoon. They can stay out of megachurches and make sure their remote controls never click on Fox News. They can stay off the AM radio dial so they will never hear Rush Limbaugh.

The problem is that this leaves them unprepared to make the best case for their side in public debate. They are too often not aware of holes in arguments that sound plausible when bandied between confreres entirely disposed to agree....