I has one friend name mok Leung, before he is stupid, don't know how to do anything, very poor,then he make friends with people from Germany and England,he hang out with them, watch, listen and learn everything they do like entrepreneur, scientist ,biologist, chemists, researchers, engineer, business, inventor ,politics, technology,5 years later I met him he become very smart and riches,he was successful entrepreneurs and inventor.he learn everything from his friends.