There's a great deal of irony here.
We can't build a thinking machine but we think we can understand our own thinking machines because researchers have run electric currents through some of its pathways. We don't even have a theoretical framework for building a thinking machine and many experts agree that if we could build a model of the brain it wouldn't work. We wouldn't know where the on switch was.
Yet we are willing to live our lives around the beliefs generated by neuroscience.
A butterfly in China can literally cause a hurricane a week later on the other side of the world but we don't have free will! Just because the butterfly doesn't know the results of its action doesn't mean there are no results or that it can't try to cause results or to determine how such results occurred.
Of course you can control your organs. Humans can learn to do almost anything. It's a matter of free will.
What we call the "mind" is the entire body and its nervous systems. It is various consciousnesses wired together but we are generally unaware of any but the one that we experience in our head and is a vector sum total of the "mind".
There is no irony here, except the one that exist in your mind. There is a difference between thinking/consciousness and the mapping of somatomotor pathways, by stimulating its fibers. One is illusionary, and the other is not. One is demonstrated directly and the other indirectly. There are many different theories and models that can explain how information is collected, stored, retrieved, and used by the brain. There are many models that explain the properties of cognition, memories, and consciousness.. We also can see how the brain is directly effected by trauma, disease, visual and audio cues, language, drugs, or in its unconscious state. Even if a thinking(conscious) machine was built that could pass the "Turing Test", it would never have any experience of its own reality or being.
https://www.khanacademy.org/science/health-and-medicine/executive-systems-of-the-brain/memory-lesson/v/information-processing-model-sensory-working-and-long-term-memory
No idea what a butterfly has to do with hurricanes, or our "free will". But I suppose it is just another one of your intellectual self-indulgent distractions that you assert without evidence.
Of course we DO NOT control our organs. Of course having "free will" also, does not control our organs. Just try and think a minute. If we had control of our organs, what happens when we stop controlling them? What would we need our autonomic nervous system for? Also, since our subconscious and unconscious minds, make up the bulk of our states of alertness(90%), does this mean that our organs can only be controlled 10% of the time? Add to this, that not all areas of the brain are active at once, and not all the time(10-15%). This means that having conscious control over any of our visceral organs, sensory organs, or our endocrine and exocrine glands, would have been an evolutionary mistake.
What we call the "mind" is the entire body and its nervous systems. It is various consciousnesses wired together but we are generally unaware of any but the one that we experience in our head and is a vector sum total of the "mind".
Conflating "mind" with body is silly. The mind is an illusion created by the mental activities of the brain. Trying to suggest that the physical neural receptor connected to involuntary organ systems also have some kind of a mind, only demonstrates your poor understanding of the nervous system or its physiology. So what is the physical evidence that supports your conclusion? We are certainly aware of where parts of our body are at all times(proprioception). And we are aware of our visceral organs indirectly(referred pain). My advice is that you should actually learn more about the reality that you clearly don't understand, before you force-fit it into the reality that you think you do understand.