that can be done. one is we have to develop technology to counter this technology. we have to get better at forensics. there is no question. the social media companies have to take more responsibility for allowing this type of fake content and conspiracy theories, no doubt about it. we have to get more skeptical and critical and more reasoned about how we consume content online. there is another technology that's emerging which is called the controlled capture recording. the idea here is in the camera at the point of recording you encode and cryptographically sign details of the content and put it on a block chain which is a ledger. then you can authenticate after the point of recording. i think that will be a trend. authenticating after the fact is difficult. if every time you record a