Sorry mate, we shouldn't derail your thread.
Chaps I think we should leave the debate (I use the word loosely) on the value of philosophy to the human condition for another thread and time.
The OP wants, and rightly so, a discussion relating to his question.
Quite right. OP I've given you a couple of pointers above, as have a couple of others. As I asked earlier, what level are you writing at?