I agree with every word of that. Not only are humans the only animals to ask why but we are also the only animals to know when something is wrong or right (through anything other than a survival instinct or some kind of Pavlovian response). I'm no anthropologist, so I can't begin to answer questions as to why this is the case, but I find the whole topic fascinating. We are always asking questions, and very often ones which have no answers. Science can't yet tell us everything we want to know, and obviously as a Christian I would say that science would almost certainly never be able to explain everything. But scientists have isolated, for example, the parts of the brain which deal with emotion, the parts that deal with logic and memory, and that is a start.
'What if's?' are fun. But I like the idea, a la 'Back to the Future', 'Quantum Leap' etc that in another dimension there is another Vicky who is living in Washington and working in the White House because *this* Vicky took up that internship in 1999.
Vicky