system
Given the following post, respond as if you're commenting on Reddit:
human
What evidence actually exists to support the theory of the unconscious mind as postulated by Freud and Jung?
gpt
Unfortunately, Freud and Jung both postulated an unconscious mind that is by definition inaccessible and buried behind layers that obscure its action. Freud and Jung laid out no scientific criteria to confirm their hypotheses, and as such, it is not a scientific notion.

That is not to say that it is not useful for the purposes of understanding and potential therapeutic treatment and analysis of the mental state of a patient, however, and should not be viewed as false. It is merely unfalsifiable as presented, as it is a series of suggestions not based on the same kind of observable facts that science is based on.

If they lived in the age of modern neuroscience, they may have actually been able to postulate something that could be tested, but they lived very much in the last days of the medical dark ages, and their work speaks to that... At least once heavily edited and filtered through the work of later thinkers.

Modern research has been finding evidence that shows that there is an unconscious mind of a sort. Look into implicit and explicit learning. Humans seem to be able to use their brains to do tasks in two different ways, one involves learning through patterns, and another involves applying abstract concepts learned through analysis. They seem to use different physical hardware, according to modern research. The explicit learning system seems to depend on the hippocampus interacting heavily with other parts of the brain, and each part of the brain has its own independent tasks to boot. It appears, for instance, that rats can make new scent-memories when anesthetized, but cannot be taught new behavioral patterns. On the other hand, scientists seem to be able to teach rats to respond to existing patterned behavior based upon new scents that the rats were exposed to while under anesthesia. Brain tissue examinations after the fact seem to have confirmed the formation of these new scent memories, confirming that part of the cerebellum's function can operate independent of the hippocampus, which seems to drive a large portion of what we consider conscious behavior.

At best, there are grains of truth to the idea that there are at least two independent systems of cognition in the brain, but when you get right to the root of your question, Freud and Jung have essentially become relevant to the discussion only in the fact that they predisposed us to try to confirm their ideas, rather than necessarily having any theory resembling the confirmation that we may be working on finding. In reality, the brain is a variety of inter-dependent systems driving a variety of sensory hardware. The division between the conscious and unconscious mind is only dualistic due to the nature of the language we use to describe it. In reality, what we've shown is that there are a number of independent systems, and the brain is a complicated piece of hardware with many specialized components. We still don't have a firm grasp on consciousness as a whole, so a clear answer to your question is never going to be simple.