our next guest, clive thompson argues that you're better off with a brain on technology and his new bookarter than you think how technology is changing our minds for the better". >> i'm glad to be here, thank you. >> you talk about the fact we have technology on our phones that can turn us into sort of miniature accountability czars, we can look at the police or government and actually take more control. i want to play a video about that. take a look at. >> protesters. >> what you're seeing here is some of the pepper spraying that occurred during the occupy protests and of course, that was first covered by people's phones. you write about it in the book and the videos were distributed quickly. do you think that is a positive thing for our politics and brains? >> absolutely. through decades, the only people that could take video and distribute it around the world were large organizations in control of the state or in control of the large corporations. now that you've got so many of these cameras and witnesses on the ground, it completely changes what we know about what's happening during