evening's program brought if you by the commonwealth club zip silicon valley we would like to thank emily chan grgso thank gina -- , of course, i want to add mly anchor executive producer of bloomberg technology and gina founder and ceo of mighty networks. i also want to thank the audience here -- in sangt clara and this is of you joining us on radio and the web and now this meeting of the commonwealth club is adjourned. but -- what what you've been looking for the signing of the book form a line here in the center -- and then proceed for your signature. [applause] booktv is roongtly covered several book on technology that include talks by former world chess champion on artificial engines and ellen on her 20-year career. and tech entrepreneur brian deer on the precor to online community plato system visit booktv.org and type technology book in the search bar. several programs will appear and can all be watched in their entirety online. here's a look at upcoming book fair and around the country on march 10th and 11th live from the university of arizona for the tucson festival 6 of books with author