I had a thought about this on a toke and walk. Imagine all the artisans over the course of human existence. All the skills and tricks they learned to just exist and live. Like a hunter tieing the ends of their bow in a slightly different way so it would work better with what they had, or a cook who figured out a more interesting way to make pasta or something. All that is just lost to the sands of time. That's okay, humanity is struggling along just fine. Still left me wondering, what do we not know?