The idea that the purpose of the law is to provide structure for optimization.

I'm not sure this is the most important thing I've learned yet, but it's the only really 'aha' moment I've had in the admittedly small sample I've been able to catch up on thus far.

I find I think about this most often as I contemplate the effect traffic laws and implements have in shaping my 20 minute optimization exercise in getting to work each morning.