saturday morning, holly harris will join us to discuss prison and sentencing reform, and then jennifer cavanaugh, senior political scientist with the rand corporation, will talk about the new report on where americans are getting their news , and what they consider to be credible sources. watch live at 7:00 eastern every saturday morning, and be sure to watch authors week, featuring authors across the spectrum on key policy issues, all next week on c-span's "washington journal." sunday night on "q&a," photojournalist chris are "dignity,"his book about the plight of those living on the margins of society in america. because all the semis were gone. she was in the industrial part of hunt's point. immediately, her intelligence just kind of came right through, and we spoke for about an hour, half an hour so. she told me her life. it was almost like a cliche of everything wrong that can happen. eventually i asked her what i ask everybody i photograph, which is, how do you want me to describe you? give me one sentence. -span's q&a. house of commons has advanced prime minister's boris johnson's amended

let me bring in jennifer cavanaugh along with oliver darcy and amy webb.is the author of "the big nine, how the tech titans and their thinking machines could warp humanity." we're going to talk about the thinking machines. first to you, jennifer, on truth decay. what are the main drivers of truth decay? >> it starts with cognitive bias. we're predisposed to believe false information and to really cling that information once we believe it the first time. that's always been around. that's not really the main driver. the main driver that we point to in our book is changes in the media landscape. this would include the rise of social media which makes it really easy to spread disinformation as well as the diversity of sources that are available. it's really easy for people to find information that confirms what they believe regardless of what they believe. >> and this book "truth decay" came out a year ago? >> 2018. >> it crystallizes the idea of what we're living through. the political, social polar ryization. oliver, to what do you put most of the blame on t

holly harris will join us to discuss prison and sentencing reform and then jennifer cavanaugh will talk about any report of where americans are getting their news and what they consider to be credible sources. watch " washington journal" live at 7:00 he spanned and be sure to watch author's week. that is starting at 8:00 eastern on "washington journal." mugs areon journal" available at c-span's new online store. check out the mugs, and see all of the c-span products. this week pbs newshour and political held the sixth and final democratic presidential candidates debate of the year in los angeles. seven of the remaining candidates took part. c-span will re-air the debate today at 10:00 a.m. eastern. the british house of commons has advanced boris johnson's amended brexit deal by a 100 vote margin. the vote came a week after the prime minister's party secured a majority in the general election. the vote paves the way for the u.k. to leave the european union. here's a look at some of the debate leading up to the final vote. >> mr. speaker, thank you. i move that the bill be read a second t

host: we would like to think jennifer cavanaugh from rand corporation for coming in and talking to us about the reliability of media and how we consume news. thank you so much. guest: thank you for having me. >> ♪ dream until your dream comes true dream on, dream on, dream on dream on, dream on, dream on ♪ >> we are taking you live to west palm beach, florida where president trump is about to give remarks at turning point usa's annual student action summit. this is live coverage on c-span. >> ♪ never tomorrow, the good lord will take you away sing with me, sing for the year, sing for the laughter, sing for the tier sing for today, never tomorrow the good lord will take you away ♪ ♪ >> ♪ there is a house in new orleans they call the rising sun and it's been the ruin of many a poor boy and god i know i'm one my mother was a tailor she sewed my new blue jeans my father was a gamblin' man down in new orleans now the only thing a gambler needs is a suitcase and a trunk and the only time he satisfied is when he's all drunk ♪ >> ♪ oh mother tell your children not to do what i have done spend