Here's a few definitions that have a lot of meaning in training:
Organism: a form of life made up of mutually interdependent parts that maintain vital processes.
Machine: an apparatus consisting of interrelated parts with separate functions used in the performance of work.
Interesting how these two words are similar, but vastly different. Yet, in the training world the connotation is often to train the body like a machine. In all reality, why would we? That's something to think about. Are an athlete's parts replaceable? How about the athlete's psyche, is it on automatic like a switch? What about the systemic effect of work on the human body compared to that of a machine?
We need to start thinking differently about the meaning of these terms in regards to training human athletes.