I don't think rayiner says he's only watching fox now, rather he's checking that as well.
Here's my take: When you look from different angles it gets harder to hide things. Fox News wants to hide some things, CNN wants to hide others. Looking at it from both angles you get to see some of the stuff each tries to hide and maybe you can make a reasonable guess on what both tries to hide.
Ah... I was assuming he was watching both. The problem is sometimes all the TV channels agree! You have to look for (usually written) news that is willing to criticize the state, corporations, and the war machine to get that angle.
Here's my take: When you look from different angles it gets harder to hide things. Fox News wants to hide some things, CNN wants to hide others. Looking at it from both angles you get to see some of the stuff each tries to hide and maybe you can make a reasonable guess on what both tries to hide.