Cavefish Is a general word used to describe more than 200 species of fish found in caves throughout the world. From constantly living in total darkness, they have unusual adaptations such as blindness. In other words, they have evolved to be blind because they live in caves and don’t need to see. In Plato’s Allegory of the Cave, we are like cavefish. Darkness represents ignorance and shadows on the walls represent glimpses of reality, but not the whole reality, only the superficial truth. The only thing cavefish / people can do is observe what is not real. Evolution allowed cavefish to let go of what no longer serves any purpose. Perhaps one day we will let go of our ability to perceive the superficial and live only by what is real.