another that was great but it does come with the cost some of the costs are that you can be constantly sergeland monitored. there are other costs as well that you're constantly on your blackberry and your spouse is going to divorce you but the one that they are most concerned about for society as well as how do we limit the possible arms because we don't want to live in surveillance states we don't want to live in libya where we are keeping final and different and dissidents. but to random and i think like a bad actors can use them that way. was to julia angwin is the senior technology editor for "the wall street journal." you can read her reporting in teams reporting on line. think for below the communicators. >> thank you. nellis book tv tom brokaw former managing editor and anchor of nbc nightly news with tom brokaw. he presents his thoughts on the current state of american society and politics. this is about in an hour and 20 minutes. >> good evening. and director from the public library as all of you know. clinical left the library is simply to make the lions roar to make a heavy institu