their new book is called an ugly truth, inside facebook's battle for domination. good to see you both. and cecilia kang, let me start with you. what is this ugly truth of the title of the book refers to? >> the ugly truth is simply is that the company prioritizes growth and prioritizes engagement on the site and that comes at a cost. the collateral damage has been more recently, the spread of misinformation and spills over into real life and causes harm and that's the dichotomy that they struggle with. it's great success from its users as well as potential harms that it causes for its users. >> sheera, with regards to the back and forth with the administration. there is a biologist named carl who says facebook is using sleight of hand with his numbers. and one of his tweets, he noted that facebook says that 85%, by counting those who have are already intend to be vaccinated to say they have. as opposed to the presidents plan which has to do with the