the former twitter ceo, dick costolo, thanks for joining us today. ♪ emily: welcome back to "bloombergology." breaking news. nowu.k.'s brexit chief is self isolating with virus symptoms, symptoms of the coronavirus. we will continue to follow the story. officials are discussing how to handle the situation and his condition. in the meantime, uber shares rallied today, spiking more than 38% after the company said it would have billions in cash at the end of the year, even in the bleakest of scenarios. and i went to bring in the ceo now in an exclusive interview. thank you for joining us. you are shelter-in-place, joining us from your home, so i appreciate you taking the time. 9/11 andxpedia through the financial crisis. i am curious, how do you compare what we are going through now, is it more or less terrifying? dara: you know, i think that people are always guilty of recency bias. i am subject to the same thing. i think this one is scarier. i think september 11 was incredibly tragic, horrible, horrible event. but it was an event and we instantly, or as close to possible as instantly, g