I think two important factors make U.S. unique: 1) The variety of people from different backgrounds cross-pollinating with each other. This takes places in oth

I think two important factors make U.S. unique: 1) The variety of people from different backgrounds cross-pollinating with each other. This takes places in other countries, but not nearly to the same degree. 2) An open and unregimented society, relatively speaking, allows for more cross-pollination with other layers of society. For example, how many other countries make it possible to study under the "Steve Jobs program"?