On this 'emergence', the following is I think also very interesting:
http://plato.stanford.edu/entries/properties-emergent/
But to say it very simple: the traffic in the US can't be explained out of the plugs and pistons in the respective vehicles, because this traffic repesents a complexity with patterns of order that cannot be found in plugs and pistons. Similar we meet in minerals, cells, organisms, etctera. This is why it is highly unlikely that human behavior can be explained out of quarks. Nature is telling us another story. And about possible intervention by God... I don't know for sure if there is a God. And if there is a God, I don't know for sure if intervention is possible. Etcetera. In the end you meet an enigma. But I do know for sure that looking for order in the world of quarks might lead to something, at least as we found lot's of order in the past, that at least looks as if it really has something to do with reality. So Profpat, keep up the good work !