Think about a headless chicken for a moment, motor impulses are automatically repeated by the nervous system in the body, and it can not really change direction on its own, until the rest of the bodily function seize.
You may not have seen a running headless chicken but I can assure you it is all over the place - including on its side with its moving legs getting it nowhere (which is how the idiom came about). Repeated automatic nerve signals to the muscles do not result in an animal going in an overall consistent direction without a means of input so it knows which direction it is moving plus some fine tuning in the output signals to ensure the overall direction is as intended. Your apparent attempt to wangle out of this one is I'm afraid failing!
