>Killing someone in a bar fight is third degree murder, so I've already covered that
So in the space of a minimal online discussion you've gone from 2 classes of murder to now 5 classes (3 degrees of murder + negligence + under threat).
Now continue this exercise for the next 250 years and you will eventually have a codification of the classes of murder which roughly mirrors our current laws. Which is to say, it will get progressively more complex.
No, you're not paying attention. There are 3 independent variables, negligence, intent and threat, and the various permutations of these are what define the classes of murder, criminal negligence, and so on.
3 independent variables is not a complex model. The complexity of the law that people bemoan are not about simple issues like murder, they are issues like zoning laws, tax law, and the numerous byzantine exceptions that are carved out to serve special interests, or laws that are archaic and have never been revisited or are only selectively applied.
How many different sub-variations of "intent" are there?
So if I plan to kill Person A, but miss my shot and kill Person B whats the charge? What if I was under threat by Person A? Who should even be charged for Person B's death...me or Person A?
Moreover, you've neglected to mention that there are all sorts of "human killing another" which are not even considered a crime (abortion, do not resuscitate orders, etc).
>The complexity of the law that people bemoan are not about simple issues like murder, they are issues like zoning laws, tax law
Lets not get ahead of ourselves, we still have barely scratched the surface with the 'easy laws'
So in the space of a minimal online discussion you've gone from 2 classes of murder to now 5 classes (3 degrees of murder + negligence + under threat).
Now continue this exercise for the next 250 years and you will eventually have a codification of the classes of murder which roughly mirrors our current laws. Which is to say, it will get progressively more complex.