>> 6:45, reporter anna wiener looks at san francisco startups in her book uncanny valley. >> i've heard people say that uber couldn't exist without this crazy culture. my question is should it exist, and that culture shouldn't exist if you don't have that culture in the past, that's fine. >> watch booktv presidents day on c-span2. >> i think we are ready to get started. i'm so excited. thank you for coming today. welcome to francie and finch. i am leslie and we have pat at the counter with the two booksellers that will be helping you today, but we have a lot of helpers. i want to find out if you haven't noticed, we have c-span in the room and tony came in from iowa, taking a little break from the iowa campaigning. so, you are going to be on c-span. i will find out when, i'm not sure that you can spread the word and let people know. marianne andre is here taking photos for jane. among them some of the milky way i don't know if you saw that it was absolutely beautiful. there are some other photographers. so we ar are kinder than a litte fishbowl today. this is great. i also want to recogn