Nitpicking here, I would tweak the wording: > Life follows a simple set of heuristics with an extensive set of exceptions. And that's OK: heuristics allow a p

Nitpicking here, I would tweak the wording: > Life follows a simple set of heuristics with an extensive set of exceptions. And that's OK: heuristics allow a person to intuit some high-level behavior without having to derive it from the lower-level rules (laws). It's readily admitted that the heuristic isn't 100% accurate, and when it's inaccurate you fall back to that explicit derivation process. From the outsider view of biology, there appear to be many heuristics for which we don't know how to derive from the underlying laws. Chemistry, at various points in time, has had similar issues, but over time we've expanded the amount of things we can derive from underlying physics. Biology, I hope, will follow in time.