[inaudible conversations] booktv is on facebook. Like us to get publishing news, scheduling updates, behind the scenes pictures and videos, author information and to talk directly with authors during our live programs. Welcome to the regular bookshop. Ninth street and downtown, durham, North Carolina. We are happy to have the altar today. Thank you to cspan tv for being here. We are delighted to have Henry Petoskey who is an acclaimed historian, engineer and best selling author, and also the alexander professor of Civil Engineering and professor of history at duke here tonight to discuss his new book, the road taken. He has written many, many books for both engineers and laypeople alike, some of which are the pencil, pushing the limits, new adventures in engineering. Small things considered, and many, many more. And this is the first time that he is here with us today at the regulator. It is such a thrill and i introduce to you my boss wanted me to mention to you that we have a collaps