What are the risks of getting it wrong? You can't wave your hands, close your eyes, and say "look how great it will be" without considering the catastrophic con

What are the risks of getting it wrong? You can't wave your hands, close your eyes, and say "look how great it will be" without considering the catastrophic consequences. We don't come close to having an understanding of genetics, and without that understanding, we risk unleashing horrible new genetic defects and illnesses for literally generations.