Excellent question. "Are humans a part of nature or an experiment in time." Having been in law Enforcement for forty years, I some times believe some humans came from a lab beaker. Of course, I know we are a product of God, however, after he makes us we are on our own. Good work.
This is an interesting poem with a rhythm and rhyme that works most of the time. I am guessing that the meaning of the silent stream is the universal subconscious. The image is lovely and adds to the piece.