joining me via skype is "washington post" national technology reporter craig timburg who wrote an articleing the experiment. craig, good to have you here. where are you? you're outside right now, are you >> don't tell my boss, i'm in santa barbara, california. >> i knew it looked nice out there i knew looked nice. now we have got than out of the way, let's talk about this psychologist and should note that robert epstein, the sigh co -- the psychologist, a beef with google there is no evidence google ever manipulated sites why did the psychologist do the experiment and come back with the substantial support that he think it is could affect elections? >> he had one of those experiences with going that will can be frustrating, his site was blocked because some hackers had broken into the site. in the course of kind of wrestling that out, he became concerned about how powerful google was over what we see and hear and really how we think. and so, as a behavioral psychologist, he decided to test the effects of google's search rankings on their way people perceive political candidates. he set up