The problem is not metric, but doing transactions in a fraction of a denomination. Its not just the perceived value problem of picking up a coffee for .04BTC. Its also keeping track of the fraction, i.e "whoops, I just paid .011BTC instead of .0011BTC per gram of grapes. It would make much more sence (cents lol) if the gram costs 0.11 GV, and I would not accidentally send 1.10gv. Sorry fraction guys, there is no explanation other than human weakness.
And what if you accidentally pay someone 0.011
GV instead of 0.0011
GV?
How exactly does Gavin solve this perplexing dilemma?
I know! Let's just set 0.01 GV = 1 HAL and then we can send 0.11 HAL instead, problem solved!
Oh wait, what if I accidentally send someone 0.011 HAL instead of 0.0011 HAL? I'm all out of ideas.