I wondered that also. Bali trip before their marriage. BHO & Michelle in Bali in 90’s — early 90’s. I think he finished book in 1992, IIRC
http://www.freerepublic.com/focus/news/2355925/posts?page=273#273
I was trying to track some of the people he would have been associated with and that are “thought” to have actually written that book of his...I read that he returned to Chicago and the book was actually finished in 1995. What is really interesting (and frightening) are the connections between the people we know he associated with and the ones those people associated with...if anyone has any doubt that our country has been taken over by a bunch of Marxists, they really need to wake up. If we don’t clean out Washington, our Republic will be lost to Communisim...the change is already in the process of development.