The paper defines life as a chemical reaction, which is also a heuristic. We do not know if aspects of "life" exist outside of our present understanding of phys

The paper defines life as a chemical reaction, which is also a heuristic. We do not know if aspects of "life" exist outside of our present understanding of physics. It's great to claw away at the edges, but I don't think anyone can answer the question "what is life?" at this point.