What does it do?

The human body is a machine, we've been told. The most complex machine on the face of the earth. In fact, most machines are modelled on our body.

I was told repeatedly by my Fluid Mechanics professor that all machines in the world have a purpose. All machines are built with one purpose in mind. He also told me all machines do only one thing, that is conversion of energy. That may be irrelevant to the topic though...

But the human body is a machine too. And if all machines have a purpose, then what is the purpose of our body?

That's a pretty deep question. Some would say, to make enable us to experience the world, or to do things easily. Enable whom? Who's 'us'?

But that is another story. We still haven't solved the case of the casing first(forgive the pun). What is the purpose of the most amazing machine known to us? Hmm, I suppose just to help you until you learn telekinesis and telepathy.. Or is there a deeper purpose? I leave you on this question.