NuLaw is only a code of conduct, like “don’t be evil” at Google, to get an idea of what that means in real life. A law has no meaning without other crucial components of a governance body, which are not present in Nu.
Nu can and should operate without that, by synchronizing the incentives of customers and shareholders using blockchain state transitions.
small textwall: motions are not votes, but oracles. The simple difference is, that if I post the hash of “apples are green” and someone else posts the hash of “apples are red” then getting 50% for red doesn’t mean that apples are generally this color, but only that a randomly picked apple is likely rather red than green, assuming the shareholders are honest with their voting. For Nu this means that phoenix can post his funny motions and at the same time I can post a motion “all of phoenix motions are void”. What happens if my motions gets 50% and then phoenix motion gets 50% a day later? What if the opposite is the case?
Motions are a very nice tool for opinion mining but not sufficiently powerful to define a true state over time, which is required to define something like laws or even contracts.