Okay, there are 2 parts: 1. The consistency: it's just one rule, so it should be able to drive decisions without much ambiguity. 2. The "absoluteness": if it'

Okay, there are 2 parts: 1. The consistency: it's just one rule, so it should be able to drive decisions without much ambiguity. 2. The "absoluteness": if it's unique as the only workable self-consistent moral system, that should suffice. Perhaps there are others, though I suspect they have one of these features: a. they drive equivalent decisions FAPP b. they are unstable and eventually won't be able to continue; either the hosts die or move onto another system I admit I haven't proven this to be the case, but I suspect it's true, or at least something along these lines. Certainly the opposite hasn't been proven.