really contradicted by basic facts of what has happened in instances where it has been tried and mexico is a good illustration of that, i would agree. all right. if there are any other questions, please let me know at this time. otherwise, i think we re going to go ahead and we ll end the event at this point and we re going to actually set professor gibbs up at the table right at the table behind there for the book-signing so if you brought a book today and we have some books available at 20% over in that direction. so please feel free to do so. and if you just have a question and you want, you know, to ask professor gibbs directly i m sure he ll be happy to talk to you directly at the end here. let me take the opportunity to say thank you all for coming out today. we very much appreciate it and i hope we ll see you again at our next behind the books event. thank you. david gibbs is a history professor at the university of arizona. he s the author of the political econom